I think there's a high probability Sokka won't respect Jupe at all (which is correct of him), but I'd love to bounce them off each other! Jupe has 3 obnoxious sons back home, so he's pretty good about rolling with sarcasm and teen antics, and it might even make him nostalgic.

PS He WILL think the boomerang is, like, a weird kid hyperfixation.