Siding with the GBs does sound amusing (especially considering I was a bit disappointed that I didn't get the evil role this game or last). It's still a bit risky, but my chances are, as you said, better with the GBs anyway.
My proposal: I steal the Grandbow tonight as a show of good will. You give me an item you don't need (the items I already have are a half-shard, a reverser, and a painrial). Providing you do this, I cooperate with your votes tomorrow and steal whatever items you ask me to. Sound fair?