Here's something which works like a charm. Nobody will know you're packing. I've been searching for the same reasons and just found this, which I really like.
The tiny Kel-Tecs conceal beautifully, too, for other situations - either on the belt or in a pocket. But I don't think I would have wanted to take one of them to this particular gunfight, or one like it, as a primary weapon. They are handy but (in my experience) with the short sight radius are accurate for about 10-15 yards, max, and not enough stopping power - especially for a guy outfitted like this one was.
That may be the type of carry rig that I need.