Well, he's one of my favorites because of his decent slots that provide a pretty good flexibility. However, you are aware that you can't recruit a former companion again - they simply disappear after you dismiss them
Although I must admit it's completely improper to put a dress on a male companion. So I tend to believe they transform into robes... Or at least the sidekicks that can use them - like Agvares and Elenhel, should have been females. We're not talking husbands or wives as it was in KBTL anyway, simply companions.