I live right next to Seattle and several people with utilikilts go to my school, but kilts are a male thing anyway.
Though I did see male dress corsets at Steamcon...but I'm just saying that there need to be more dresses tailored for men. If women's dresses accentuate femininity or sex appeal, why can't men have something similar (obviously not the same)? Putting a women's dress on a man looks silly because women and men are built differently, and it's not necessarily because of "the lingering sexism in our fashion industries." Men and women look different! Just because a woman looks fine in "men's" clothing--let's take pants as an example--doesn't mean she won't look better in women's pants that are cut to suit a woman's figure. Not ALL women are curvier or bustier than men, but as a general rule we are, and so clothing is made so that it will look good on our body type.
"Sexism = the selective treatment or regard of a person on the basis of sex," OR "Prejudice, stereotyping, or discrimination, typically against women, on the basis of sex."
I don't think it's sexism to acknowledge that genders look physically different and make clothing differently so that both genders can have clothes that fit them properly and look good. There are exceptions, of course (this kid at my school wears one of his mother's suit vests and it looks great on him), but in general, women's versions of men's clothes look better on them than men's versions of men's clothes.
So, men would have to wear a different type of dress. It might not even be called a dress, but who freaking cares if we have to call it something different, as long as it exists. (and they're utiliKILTS because they're freaking KILTS, not because no guy would buy skirts. >_< I imagine that's part of it, maybe? But skirts =/= kilts. The lack of bright colors, though, is silly, you're right.)