If you wear The Kilt for special occasions (weddings etc) , then st Pats is just another special occasion, by wearing The Kilt on st Pats, your not trying to suggest The Kilt is Irish, if people want to think that its up to them, ! when I was studying in England I wore my own Kilt and played the bagipes at a St. Georges day event, I wasnt trying to suggest that The Kilt was the national dress of England. (although English people seem to have adopted Burburry Tartan as their national dress) (JK)

There are a lot of cultural "crossovers" between Irish and Scots culture, language and music -and Irish/ Irish descended folk populate a large percentage of the west side of Scotland. even my own family, which has it roots around Avoch and Gairloch has a branch from Ireland, on a day of celebration wear whatever you feel comfortable, but by wearing the kilt your not purposly trying to suggest its "Oirish" if people think that your not going to change that view by steadfastly refusing to wear it