I'm the Director for Security at a local hospital. (you can tell its a serious job by the caps in the title)

My officers have to wear uniforms though I dress in normal business clothes. Often I am the final authority the public deals with on several matters, and usually thats when they already are not happy. A professional and conservative appearance does help with that quite a bit.
While the kilt would be a great asset in a security environment like bouncing, I feel it would be a liability in many of my interactions with the public.
I'd like to say thats just their problem, but then it becomes my problem when I have to deal with the repercussions.

If we ever have any sort of non-work formal get togethers though I will probably wear my kilt, as I do now when I get together with some fellow co-workers now informally.