[QUOTE=xman;905922]How about wearing a suit and asking their position on kilts because you are a frequent wearer? That demonstrates your passion without breaking decorum.[/QUOTE

I agree. Dress for the interview and ask their opinion on wearing kilts. A few years ago I made kilts for the Diagio beverage company team who were promoting Johnny Walker and other Scottish whisky brands in the Southeastern USA. They looked quite nice. The kilts were well received (as I understand) and they fit the occasions for which they were worn. You may suggest this concept in your interview as a promotion for the company where you are applying.

Here's a photo of the team.