What kind of holster are you referring to? IWB, OWB, Shoulder, etc...
I couldn't imagine carrying mine though. It is pretty damn heavy! I carry a Commanders and CCOs in 9mm with alloy frames, mostly a Dan Wesson Valkyrie Commander or CCO.
You have GREAT taste in Lights. Since I got this, I don't bother with any of my other tac lights, most of which are SureFire X300s of one sort or another. This little thing is brighter too! OLIGHT makes some amazing lights at great prices. I got my MINI-PL for $59.99 new on EBay. OLIGHT had a special for a few days in their EBay store.
My Dan Wesson Specialist Commander with the OLIGHT Valkyrie PL-MINI
As you can see below my Specialist weighs 46.6 ozs fully loaded. That's without the Light, so add a few more ounces. I find 36 ounces is my max for comfortable all day/night carry. Anything more and by 3pm I wanting it off me!
My Dan Wesson Specialist Commander fully Loaded (10+1 rds 9mm 124gr HST)