Check this guy out...The holster is kydex on leather but the leather has a neoprene moisture barrier and a layer of fleece stitched to the back of it. You can choose your leather and stitching colors for $49...another $25 get's you the mag carrier to match. He currently has about a 4 week lead time. You can wear IWB or removed the clips and wear on the belt.
I have swapped the clips out for some CompTac c-clips and it gives me about an inch to an inch and a half more tuck...
edit for web link... http://firearmholster.com/