Pros: A huge asset at game night, truly and really believes in you, extremely clever, will get you thoughtful gifts, is preternaturally intelligent.
Cons: He's really good at mind games, will do that thing where he sets out a scavenger hunt of clues leading you to a present, but that present might actually be your death.
Assessment: The thing we need to prize Jigsaw for the most is his mind, which is sharp as a tack. Conversations would be intellectual and occasionally frustrating, ultimately ending in dissatisfaction, but his wit and sparkling intellect might keep you interested just so you guys could work it out. But you'd better like playing games. Like, all the time.