It's quite true that Stint came in to consult when Rabastan was injured. One cannot say that he does not know his craft. He's earned quite a strong reputation, treating curse damage. In fact, I've heard that the Ouroboros Club have a special arrangement whereby it's Stint they call first whenever there's an injury on their sparring courses. He can boast that he's treated many of the most highly placed people in the Protectorate.

And he does.