A few years ago while visiting relatives in Edinburgh (who knew I was into kilt wearing) they offered to take us out to dinner, but did ask "You're not going to embarrass us by wearing a kilt are you?". Unfortunately I think this is a general view in Scotland. Michael MacDonald said in his book 'Scots Kith and Kin' "In the Highlands the kilt is mostly worn by tourists, so if you're lucky enough to see one, it may not be 'at home'. Of course it is widely worn at special functions such as weddings and dances, as it should be. I think the notion that everyone in Scotland wears the kilt is the same as someone from Scotland going to America and expecting everyone to be wearing cowboy gear. Although I've seen far more Americans wearing stetsons at home than Scots wearing kilts !