That is not yet public knowledge. They might be a bit upset however it has been years since they have known each other. They might resent him a bit but honestly I don't expect it to be a major plot point.
I think it is going to be the unknown 9th unmade.
He wished to be a duelist. He craves thrills. He also used his gambling habit to pretend that he was in debt to help make the Davar's some extra money by selling off the maner's possessions. He might make an OK willshaper.