Yes, the drawback to using the chamfer tool is that it cramps the hand after a while. Not as good as a power tool, for large amounts of brass.
I get around that by only doing a few cases at a time, then doing something else for a bit, then doing a few more cases, and so on. Eventually they all get done, and since removing the primer crimp is a once and done thing, and since I'm not in any rush reloading things, it works fine for me.
and, I don't have to mess with getting out a drill, (which isn't something normally part of my reloading tool kit, anyway.) Though I suppose a dremel would do just as well, and I have those, I just don't bother.