Aaron Sims sounds plausible.
Well, the whole Japanese sword thing seems to be emphasizing the point that this is an East meets West kind of thing, like they were saying. It's pretty dang cool, as long as they have some kind of explanation and that is a new character or one of the other white-haired characters who have been seen using a Katana before, like Alucard, Hector, or Soma... Or Juste would be fine.