Esau Cairn
Explorer
At different points they can be, certainly. They go through phases for sure. But they cooperate quite a lot with both each other and with other folks.
Some of whom they eventually betray, but hey, if I had a game with those two as PCs I'd call it a huge success.
Maybe it's that "I'll-make-meth-and-destroy-other-people's-lives-to-save-myself" thing that makes him a jerk. YMMV.