I've always wondered about this stuff. When I started tying, I bought a tube of Overton's Wonder Wax because that's what was available. I used it happily for a couple of decades until it ran out. When I found that it was no longer available, I tried dubbing without it. I got about the same result. I don't use any fancy dubbing techniques - I just apply the dubbing to the thread and twirl between my fingers. I'm not really sure what "touch dubbing" is.