The Kydex thing is new to me. What are the advantages of it or a hybrid over leather?
Retention is one... which brings us back to that. Kydex holsters are adjustable for retention with a heat gun. The hybrids have leather between you and the gun for your comfort against rub, and to stabilize the holster. The Kydex is a good way to make a holster that can be re-holstered one handed and still have good positive retention.
A good belt is more than half the battle. You're better off with a crappy holster on a good belt than the other way around. Buy the best you can find.