I've been sly now for almost 8 months. I love shaving and wouldn't think about letting what's left up top growing back. For me, there haven't been many disadvantages to becoming sly. Here's where I insert the "But".
Either I have been, or am becoming more clumsy. Thus, leading to knocking my head against just about anything available.
If there's something sharp near my dome, rest assured I'm going to hit it and it's going to cut my head. I haven't had many (two or three) accidents with the blades from my HB, but I sure as hell have sliced up my head running into things. I just don't recall having this problem when I had a little hair up there. Anyone else run into this (no pun intended)?