I run a Raven Concelment holster with a M3 light attached I have used it for a year or so and this thing is the Heat.The Malabar Front
I use this with A Glock 23. There product really stands up and they warranty there stuff for Life.
I actually have another issue too. I've always been a Glock shooter (don't hate me!) and this is the first single action semi-auto I've owned. I'm pretty nervous about walking around with it cocked and locked. I can just see the slide lock getting knocked down and me firing it halfway through my draw. I want to feel safe while I'm carrying it; not like I'm going to shoot myself drawing it.
I also have a rafter-s iwb made from sharkskin. It looks great but is a little thick.