I have to agree with Flairball, about it being insulting. We never wear anything other than a tradtional white gi. Not even allowed to wear one with black trousers. So i'd never expect to be allowed to wear a kilt.

Funny though, we assume that karate and the wearing of gis is some ancient thing when modern karate isn't really that old (in the grand scheme of martial arts) and as well gi's like we know them today are an even newer invention.