While I don't think it is wrong for anyone to wear a kilt, I do at least understand reluctance based on culture. I personally have very little Scottish heratige (closest Scot was in 1600's according to my mother's research), but I could still be Scottish to the casual observer.

On the other hand, I don't wear dashikis (probably spelled that wrong), and the biggest reason is I don't want to be perceived as a "white guy" trying to steal an African heritige. I am afraid of offending others culturally (as opposed to just their sense of what any guy should or should not wear).

Adam