You can see a video of how I modified the holster with a heatgun to make a Thumb Safety keeper:
http://www.youtube.com/watch?v=SvYQIYQpp58
- Replaced the straight bracket that came with it with a curved 'J' shaped bracket. This effectively moved the belt loop to the right. I wanted to wear it with a forward Cant, but the belt loop was in the way of the handle, so I couldn't get a good draw. I got a piece of .093" thick scrap Kydex from a buddy and cut it to shape.
-The body protector portion of the holster was sitting flat agains the thumb safety. I heated the kydex in this area and created a shelf for the safety switch to sit against. It's now almost impossible to move the saftey switch while it's in the holster. I really wanted a 'catch' for the safety switch in case the ambidexterous safety got hooked or bumped on something.
-Added some Dr. Sholl's moleskin to the parts of the holster that will touch skin, and a small piece to the butt of the weapon. Now I can wear this on a hot summer day with Tshirt and shorts without getting chaffed!
Overall, I'm really pleased with this holster. The holster portion of the Kydex is only.040" thick and it's super strong, you just can't get any more concealable than that. They kydex is pinched at the trigger guard for great retention. Well worth the money and the 5 week wait.