I hate spending money. I really do.
I sat back and watched/waited for 3 years or so, before I took the plunge.
I bought a couple RMRs (the dual illuminated models so no batteries, electrical issues, etc.) and sent my P09 9MM off to Primary Machine. Why the P09? Because my EDC is my .40 S&W P07 and I sure didn't want to take a chance of messing it up. While the P09 9MM is the most accurate semi auto (center fire) pistol I've ever shot, I figured I could just remove the RMR if necessary.
Primary Machine milled the slide for the RMR, milled the slide for the back up rear sight, installed the front/back tall sights and mounted the RMR on the P09 slide and cerakoted the P09 slide OD Green for me.
When I got it back I put the slide back together and put it on the frame and went shooting. Best groups I ever shot. Proved to myself the dot doesn't have to be in the center of the lens, just has to be on the target where you want the bullet to go. Proved to myself that even without my glasses, I could still put a blurry dot on the target and hit where I needed to (loss of my glasses means I can't see the front sight - no visible front sight makes it hard to shoot/hit).
With conventional sights you have to line up the front sight with the rear sight and then line the front sight up where you want the bullet to go while keeping the front sight aligned with the rear sight. Pretty easy standing up/not moving. Now, introduce low light conditions or you having to move and shoot. With the RMR, all you have to do is put that dot on the target. Just like a red dot optic on a rifle. You line the dot up with the target and send a bullet downrange.
After that range trip I contacted Primary Machine again and set up for sending my P07 slide off for the same work (except cerakoted FDE on the slide).
The RMR cost a bit more than the P07 or P09. The machine work, sights and refinishing (total for both pistols) would have bought me another CZ P07/P09.
It was totally worth it. The P07 remains my EDC and the P09 is in the bedroom in a cabinet in case I can't get to the P07's hiding spot.
Would I do it again? Yeah. I have other CZ's but none of them are as "ready to roll" day/night as the two RMR'd pistols.
My wife liked them so well we sent her CZ 75 Compact to Primary Machine and go the same work done to it, but installed a DP Pro on hers. So far, her first battery is just over 6 months old and still going. She doesn't carry every day but it goes to the range and on road trips with us and I'd think any bounces while on the road probably turn the dot on over and over.
The only bad thing in this story is the green dot on the P09 doesn't work as well for my eyes as the amber dot on the P07. No more green dual illuminated RMRs for me. My eyes just don't "see" it as well as I'd like.
If your pistol already "points" for you when you bring it up then the dot will be there for you. If you've got a pistol that makes you "work" for the sight picture now, putting an RMR on it won't help that. Either learn to use the pistol you have or get something that naturally points for you.
I don't need another RMR'd CZ but I keep thinking about getting a 9MM P07 and having it done. Why? Just because.