It seems like the previous posters have all carried for decades and have found what works best for them, even if it is not perfect.

Experience is a great teacher.
The formerly inexpensive Safariland/Bianchi suede pouch is my preference, although I have found a few hardly used IWB pouches in the $1 bin at my local range. Obviously, IWB is not for everyone.
I've tried other IWBs, some with flimsy, insecure clips and others made of nylon which never seemed to "fit my pistol." One is reinforced around the upper lip so the gun can be reholstered without removing the rig, but it is "fat," uncomfy, and hinders concealment.
You will know when the "perfect" holster comes around when, after years of use, the holster conforms to the gun just so and the gun/leather combo looks like one piece.
Kaaskop49
Shield #5103