When I first started using handguns, the only material available was leather for holsters. Leather was good at the time, but could be heavy if it had to be thick enough to retain special shapes required in modern semi-autos. It also absorbed and retained moisture too easily. The biggest problem I had with it was that it could cause corrosion or discoloration problems over long term use. I learned the HARD WAY about storing a pistol in a leather holster - every place that made contact with the leather had "green" corrosion on it. Once they got "soaked" in the rain, it could take weeks for them to dry naturally. If you "forced heat" dried them, they would get stiff and tight. Even constant "high humidity" could have an effect on "formed" holsters. If you kept them properly oiled with neatsfoot oil, then they were more apt to pick up and retain dust and dirt and then discolor, sometimes unevenly. If you didn't, they'd get dry and crack.
Needless to say, when the new "tactical nylon" holsters came out I was enthusiastic to try them. First, I found them lighter and generally, much slicker for drawing quickly. If they ever got wet from either rain or perspiration, they dried very quickly, yet retained their shape. At first, most people thought the tactical nylon holsters were "tacky" looking, but over time, they started being accepted for their advantages and were more commonly used in many competition matches. Tactical nylon and velcro slowly replaced leather and snaps in many applications except law enforcement duty wear.
Now there is another "new kid on the block". That is the FORMED MODERN SPACE-AGE PLASTIC HOLSTERS like the Fobus and Kydex designs. I purchased one of the Fobus GL-2 Paddle holsters when they first came out and now LOVE IT for use with my Glock 23. It fits very well and is not affected by either water or perspiration. It is SO LIGHT you almost don't even know it's there when you remove the gun from it. When first new, they can be a little "tight", but a little silicone spray and about an hour in front of the TV pulling it in-and-out of the holster can really "slicken" up the draw. It uses NO RETAINING STRAP to hold the gun, but offers excellent retention even under extreme physical demands.
The canted angle seems ideal to me, but the Roto model offers some adjustment in this area. The Fobus is mfg in Israel and is used by their military and police almost exclusively, therefore it has a PROVEN RECORD of reliability and service. The best part is that the price is around $25 or less, depending on the model and where you buy it. The Kydex line is very similar, but their prices start in the $50 range and go up.
Before you put out any BIG $$$ for custom leather, you might want to try the Fobus line of paddle style holsters. Their extra mag carriers are excellent also and I have both the single and double mag models that I use. You didn't state what model Glock you use, so not sure what model you need. Try this hyperlink:
www.fobusholster.com :twisted: :lol: :wink: