I am married to Farkas, whose been sitting at home while Serena and I are out and about. I stopped at the house to drop off some stuff and had a conversation with Farkas and asked him for work. I got the " I don't want to be a werewolf" quest and the message saying my follower was replaced by my Companion. Except she wasn't. So I now have a vampire and a werewolf with me. Farkas won't carry stuff for me, but they both fight. So, I'm off with my two practically indestructible followers to go run some of the other quest lines. Awesome!!