I don't, but I am considering doing it now after reading the SW FAQ. As I was reading it I didn't know what half of the stuff was talking about. It would be very easy for a Space Wolf player to pull a fast one on me. Though I trust most of the people I game with, should that player make a mistake I could be able to correct it. It's better to know your enemy, after all.
The only problem with that is I may be sorely tempted to start said army, thus stretching my already thin gaming budget.