No wonder instructors find it hard to claim their role as that of a 'professional' if 48% of the voters on this issue (presumeably instructors) vote for jeans and nose rings. In every other job I have had I have worn a suit and tie in order to portray a professional image, so why should instructing be any different?
If you want to be a bohemian, go paint pictures for a living and but a pack of gitannes. (Apologies to all you french instructors.)