I use 3 different holster for my .45.
Mostly I use my stealthgear ventcore mini IWB and its fantastic, especially in Florida the way that it wicks sweat away from the gun.
I also have a leather OWB from Mitch Rosen, the upper limit express, and it is very comfortable.
Lastly I have a kydex from concealment express for quick trips and convenience.
They all fit the .45 just fine and are good holsters for their intended purpose.