Pretty cool, but I'd feel guilty for having something USMC labeled if I'm not, y'know, American, or a Marine. I'll be honest, I'd be shipped off Parris Island right after the buzz cut in the barber's chair...thinking of the opening of Full Metal Jacket.
Still, it's a pretty cool conversation starter, and leaving that stuff out in the open would be a good deterrent to potential medicine cabinet snoopers.
Nick Shaves on YouTube has one of those brushes and really seems to like it, so I guess the functionality can't be too bad. It does look awfully chunky in the hand though.