Years ago, I purchased a leather holster from an artisan at the local gun show (before I started playing with leather). The cant is about the same as the one above. His main point behind that angle of cant was so you could draw it easily from a seated position, say in a vehicle. He was right. worked very well. Even when not seated, it wasn't bad to draw. The other advantage is that it also makes it hard for someone to come up behind you and grab it. It just won't come out that way. Nicely done for the first of many holsters, I am sure. I do agree with maybe extending the holster a bit so that the end doesn't stick out when you have the thread cover on it.