hmmm, interesting choice there. I've had this debate with about 4 people. I always thought it was masculine since there's quite a bit of clove and wood in there, but a few people think it's feminine with the vanilla. I guess it just depends on your tastes for the notes. The Byredo line in general hasn't got much attention (I'll be doing a bunch of talking about it soon) but it's worth checking out for sure.
Have you just read about it or tried it on? I can probably get you some samples to work with if you haven't smelled them, just PM me.