I was around when women were told they couldn't wear pants to work. They won that long battle. I see a parallel with men and kilts. I'm hopeful we will prevail in the long run. For sure no fun to anger the boss or risk the paycheck over wearing the kilt to work. Your employer's reaction will give you good information about the company culture. In turn you may choose to move on.

Always fun to do a job interview kilted. Then, if you're hired, you know its okay.