If you have Scottish ancestry, you could always play the "heritage" card.

As a DoD civilian, I know that you would have a REAL hard time fighting the bureaucracy. I'm lucky in that I can wear my kilt from time to time without any hassle, although I don't know what the reaction would be if I tried to wear it every day.

Even if you did want to fight it, you would quickly be labeled a troublemaker, and that is certainly not good for your career.