its kinda funny if you think about it. Imoen has this great belt on that keeps her from dying, making her invincible, then she gets taken away, and the belt that cannot be removed physically or magically is mysteriously gone when you rescue her. You would think that if Jonny had removed it, he would have at least put it on himself until he became the big baddie nasty man that he was going to be. Obviously, he didn't, because he isn't invincible, so what happened to the belt?
i think some halfling thief somewhere is making tons of money pickpocketing people, then betting on the fights he gets into because of it.