I have one on me all the time for assorted things, so I love them as masks. I work in a cabinet shop for 4 hrs a day then head to work. Most of the time when I come home and it's dark, the temp drops about 15 or so degrees. Around the mouth and nose and over the ears keeps them from getting cold from the wind. I do notice that after about 10 mins of riding that you create a little 'atmosphere' in the area around your mouth. For the ride I take, it's fine for. However, in a longer haul I can imagine that it the moisture would get quite cold. At that point I would use my ski mask.

While I've gotten strange looks from cops, I have yet to be stopped. I've wondered the same thing myself though.

While we are on the topic of face wraps, does anyone else have trouble with breathing through scarves? Do I just have a wierd allergy, or do scraves just make it difficult to breathe?