I played a CA cultist back in the RQ 3 days, got him to rune priest level, it was great fun. Lots of complaining to other players about their obsession with violence and trying to show them the true way. Sleep is very powerful, combined with non chaos NPCs not wanting to hit you, gives the player a lot of choices. The other players put up with him because he saved them sooo many times.
There is a lot of trying not to fight in RQ, having a player who looks for another way makes the game more interesting. When it does kick off the other players will quickly learn how useful a CA character can be.