Oooohhhhhhh a potential conflict between the different groups sounds like some fantastic drama :). Cael isn't the friendliest person in the world given his "protect myslef and my own at any cost" attitude, but if anyone is able to penetrate those walls and because part of his "my own" then he'll do whatever it takes to keep you safe. With that said, he isn't the kind of person to let others get hurt or die if there's something that he can do about it but he isn't going to run in head first and put his life on the line for someone that he doesn't know unless he thinks he can benefit from it in some way ;).