I may be mistaken, since I don't live in Scotland, but my impression is that Scots are more likely to own only one very well-made kilt in their own clan tartan that they wear to weddings and other formal ocassions, and/or to have a very inexpensive "designed in Scotland," made in Pakistan kilt or two that they can wear to football games without having to worry about getting beer spilled on it or worse. The latter are rarely in clan or district tartans, but are more likely to be "Heritage of...," "Flower of....," etc. fashion tartans.