I think that replies who are giving advice on retention straps might re-visit the OP's posting: He is specifically describing the use of leather straps as opposed to clips for attachment of the holster to the belt, not for retention of the handgun into the holster.
Nope. I wanted both, but am now leaning away from the retention strap, thanks to suggestions here. RTFQ
I like the suggestion on the holster maker you know. I will contact him.
The Kydex thing is new to me. What are the advantages of it or a hybrid over leather?