Wild Bills concealment leather. He makes darn good stuff at a little better cost than the big names, and it works just as well. I use a pocket holster for my J frame, it is smooth inside and rough on the outside, helping keep the holster in the pants when it is drawn. I believe he also makes a small leather piece that is attachable to the holster to break up the outline.
I have worn it many times and been asked where is my gun, in a variety of pants except Levis. They are cut too tight and too high for a smooth draw (this could be me also). But in dress pants, dungerees, uniform pants, BDUs, not a problem.
Bill's selling point to me was a good one. I asked him if he had a J frame redgun, as he keeps a variety of pistol molds so folks can "try" on a holster. He simply pulled a J frame redgun out of his pocket, very quietly and quickly. Sold.