I came across a good way of presenting Scottish views from a book by Michael Lynch, Scotland. He suggests we view Scotland as three diagonals regions based on the geographical dividing structures. From that perspective we can avoid lumping the whole country together. Each diagonal has their own commonality rather than with the whole country.

On the kilt on St. Patrick's day question, I'd say go for it. I don't think anybody really knows and just go for anything vaguely Celtic. I've had more yics (yahoos in cars) shouting out anti-Irish sentiments at me when I'm kilted than anything Scottish, go figure.