to be honest in places like Glasgow or Edinburgh a large percentage are, tourists, or pipers , most weekends youll see the kilt for weddings and stuff, as you head further north you will see the Kilt worn casually more often, but yes a large percentage are tourists, which isnt such a bad thing, I think it has to do with the perception of Scotland by a lot of overseas visitors who are amazed by the fact that we dont live in castles and have televisions and Telephones- in fact we invented them!