I noticed (after I had the RMR added to my P07) that custom, meaning we'll make it while you wait, kydex/kydex & leather holster makers are attending the gun shows in my area now.
Last gun show I had an all kydex IWB holster made up for my customized P07. The guy altered/formed it right there on/at his table.
The next gun show (about a week from now) I intend to see if the guys making the leather/kydex combination holsters show up again. They got a "tool" set up behind their table to form the kydex. You pick out the leather shape/size and color you want, you pick out the kydex you want (multiple stacks of various emblems, signs, symbols, etc. and colors) and they combine them all to make you a holster that fits your gun. Can't say how good those are, haven't gotten one yet.
I'm sure vendors doing that can make them for CZ 75's also.