I'm looking to start carrying an edc flashlight. I'm looking at surefire and I think I want to buy the P2X Fury tactical light with the thrym switchback. My main concern is that, is the light waterproof and durable?      (The light would be paired with my XD-9 for CCW)

I've had my P2X Fury Tactical for about six months without issue.

Like you, I bought it with intention of carrying it every day, but for me it's just a bit too big for me to comfortably carry every day. I generally carry a FourSevens Quark in max only, and a FourSevens Preon 2 in titanium for a small task light.

Pic of the three lights:


With that said, it's one of only a few flashlights that I would really trust to work every time I need it.

Shameless bump for more advice

Hey, here's my three EDC options.
Right now the Aviator is my most often carry. It's red and white light, smaller and lighter than the other two, and has the clip. It is also the most expensive, but for about $120 used, it was worth it for piece of mind.
The G2 has been one of my favorite carrys ever. It is not the most robust light, but it's served me through two tours and several subsequent years of carry. I had this one stippled by Damatos Custom and it's very nice and grippy. Much cheaper, find them used with the nice KX4 head for about $40 shipped on the EE.
The last one is a Pentagon light. They don't make them anymore because of a lawsuit with Surefire. It's very sturdy and solid, but heavier than the others. I paid about $70 bucks for it and a single cell light together.
When I carry just in a pocket, I go with the Aviator, when in my bag, I usually keep the G2 or Pentagon light.
I had the lowest version of a Streamlight (like a G2) and it would randomly cutoff when the button was still pushed. I assumed it was a connection issue. Tried different batteries and pressure combinations. I couldn't trust it so I just gave it away. I'm sure Streamlight has good lights, but I didn't go back.
Hope this helps.

Just a suggestion... take a look at HDS / Ra lights HERE.

I was a self-admitted Surefire fanboy for years, starting with the 6P in the early 2000s and ending with the first gen Backup.  
I finally opted to follow the "Cry Once, Buy Once" creed and sprung for a Ra Custom Clicky years ago.  At 130 lumens, it isn't my brightest flashlight, but if my life was on the line this is the one light I'd carry.  It's small enough to pocket carry (but works best on the belt in a Milt Sparks 4C carrier for the 6P).  I'm seriously considering making the Rotary my next flashlight purchase.

Also look at Fenix. I don't know how big of a light you want to carry, but they have some good options.

I carry a LD02 everyday, but its a smaller AAA light.

LD02

Warning:The clip it comes with sucks. I ordered a clip from a Streamlight Microstream (about $2.00) and it fits the LD02 perfectly and makes it a far better option.

If you want bigger the PD35 Tac is your answer.

PD35 Tac

Everything must be tactical.....

How about thinking just a little outside the box, and look at the Pelican flashlights that are intrinsically safe?  Imagine you're somewhere and the lights go out, you smell gas....  There's nothing tactical about that, and unless you want to be toasty warm for the rest of your life- don't trigger that tacticool flashlight.  Same with being in or responding to a car wreck- gasoline leaking all around you.

Tactical lights have a place, but what scenarios seem most likely to happen to you that you would want to turn on some light?

Food for thought....

For the last couple of years, a Surefire E1d in my pocket.
I tried Fenix's before that, but they just didn't last long.

I used to carry an E2D Defender, now I just carry a Titan Plus.

After carrying bigger flashlights for years I've been carrying a Olight S1 baton. Throws plenty of light and fits in the change pocket of jeans.

Interesting angle. Can you elaborate on what makes the tacticool flashlights unsafe?

Strange, I don't recall saying they were unsafe.

An intrinsically safe flashlight is safe to use in an area where there are explosive gasses or liquids.  Granted, that doesn't happen often, but I would venture to guess it's as much or more of a possibility than using a flashlight tactically (assuming you're just a regular citizen and not police or military).  My house is gas heat and hot water.  If there's an earthquake (more likely than a burglar here) I don't want to make a bad situation tragic just because I want to get some light on.

They may not be as bright as the tactical lights but will take regular batteries and last longer, important if your EDC becomes several days before you can recharge or replace.  Is brighter better?  For tactical uses yes, for EDC maybe not.  I have two 25v 450 watt aircraft landing lights on the front of my M1009 truck.  Turn those things on while driving in town and the reflection from the road signs is blinding.  If I get into a car wreck or help at the scene of one, I don't need to light up the horizon, just the area I'm working.

I carry this one: http://www.streamlight.com/products/detail/index/polytac and I use rechargeable batteries in it.

I would just like to know what makes a tacticool flashlight less safe in those scenarios. Honest question. 

The protac that takes either 1 cr123 or a AA is a pretty slick light.

Or go thinner.

A 2 cell light is kinda big for edc.  Unless you're trying to impress the ladies.

I'm a big fan of those, I actually have  a couple on rifles and they have held up great for a couple years now.  

I do carry it around sometimes but one of the single cells or aaa streamlights fits the pocket better.

The polytac is a great flashlight tho.

ETA- the 10tap system is great for an edc light.  The run time on low is super duper long, like 40 hours or something? I forget but it's good stuff.

Here are some excerpts from an article on IS:

If I were to perform a missile inspection using any of the tactical lights mentioned above, production would stop and I would be escorted out of the facility.  My continued employment is questionable.  It's serious business.  

So I took that and applied it to my EDC.  Like I discussed earlier; what is the more likely scenario- tactical flashlight use or use of a flashlight in some sort of emergency?  For me (not being police/mil) it's the latter.  Thus if I'm carrying for emergency lighting (and I don't know in advance what that emer will be so prepare for the worst), also for times when I just need a flashlight, and lastly for scenarios where someone is trying to kill me, I go with what my work limits me to; Class I Div I or better.  Now if my primary purpose for carrying a flashlight was to blind/disorient an opponent, then a tactical flashlight would be more appropriate.  You may prioritize those risks differently.  Preparedness is all about priorities; it makes little sense to be better prepared to deal with a very rare scenario at the expense of one that's much more likely to occur.  

To your direct question; what makes them less safe?  I really don't know and I don't even know that they are less safe.  Does the light you're using get hot enough to cause ignition in a flammable environment?  Does the button or batteries create a spark?  You don't know, and I guess that's the point.  An IS safe flashlight has been tested and certified not to be an ignition source.  The tactical light might not either, but they chose not to get it tested or certified.

There is nothing intrinsically safe or unsafe about most quality lights.

I've been EDC'ing a flashlight for almost 3 decades.  I prefer carrying AA lights because of the availability of batteries, but I sometimes use a CR123 light (usually Surefire E2 series).  All of my EDC AA lights also handle 14500 batteries, which offer more performance then regular AAs.

My current favorites are the Eagletac D25A Clicky and the Olight S1A Baton.

But for the best source of info, check out the Candle Power forums.  It is where the Real Flashaholics hang out.