OK. So I finally got to take some pictures in sunlight. Here are two pics showing that this thing sucks my Smith & Wesson L-Frame in tight enough that it it undetectable even under a light, cotton shirt:
Here's a better pic of the holster itself in use:
And, the money shot:
As I said before, I'm thrilled about how this one came out. Maybe it was beginner's luck, or maybe I have some natural talent for this kind of work. I'm going to have to make some more holsters to find out!