This thread is funny because I live in Breckenridge and it never even crossed my mind it wasn't acceptable. I'm a chick and like dressing cute off the hill so I don't, but it's certainly quite normal around here...
But if you want my opinion, I'm attracted to it on the hill but not off unless it's a tall hoodie... I think that's how a lot of girls are. So if you want a lady friend, I'd pass if I were you.