I've tried the kydex/leather holsters for two different pistols and they just never feel 100% correct. One was a Crossbreed, the other Old Faithful Stage 3 kit. Honestly, the stage 3 kit (now called quick assemble kit) from Old Faithful is what these types of holsters should cost and assembly is quite easy, plus you can just replace the shell cheap instead of the entire holster for a new gun.
The kydex is slightly thicker and better quality than a Crossbreed IMHO.
I've found though that all leather with loops instead of clips are more comfortable and easier on my belt all while staying put. I'd highly suggest this type from Winthrop.