Nope. Let's say there's no kill, the JK claims and says I was jailed. Am I the wolf? Or am I the wolf target? Villagers don't know, I'm now 50-50.
Actually I would be obviously the wolf target, since knowing I'm a potential target for JK, I'd delegate the kill. So ok, maybe this is ok. But if there's no kill, it clears me, rather than nails me.