OK, this is a serious question, though it may not come across that way.
I have been tying for about a year now, and when sitting down to the vise I often wonder whether I should have the hook in the vise just enough to hold it, or deep enough to cover the point? It came up again as I was watching a couple of videos on tying the Prince Nymph, one had the hook just in the jaws and the other barely had any point showing.
I can see advantages to both methods, especially the buried point when you have to sweep hair or hackle back, like for wet or wingless hair fly. I can also see an advantage for shallow mounting when using the barb or point as references.
So, which is the typical method, deep or shallow. Or is it just a matter of preference?