Great drinking buddy because: We all need a friend who is going to call you on your shit and tell it like it is. The Onion Knight will lay some truth on you even if he knows it won't be well-received. Also, dude used to smuggle, so he can always get you in the club, no matter how long the line. And damn it, he's just a good dude, and sometimes that's all that matters.
Potential problems: Sometimes you're not ready for real talk. For example, If you know the girl you're seeing is bad for you, and happens to be a pagan fire priestess, then you probably don't want to hear it from someone else.