"Maybe," he says with a slow nod. "Might be a slow, awful thing to do to someone."

But that can have its place, even he will admit that. If used sparingly, it could just slow someone down, throw them off just enough to allow him or someone else to catch up to them. Or prevent an attack, save someone else.

"Won't know until I try it, and I'd rather not try it on a person for the first time." Which makes him frown, since experimenting on animals is nobody's idea of fun, or at least, certainly not his. Better than people, though.