I don't like it, and (kilt or not) I fully expect anyone wearing it would get a lot of crap about it, as it would not be recognized as men's clothing by many. But as always, I say as long as everything I don't want to see is properly covered, wear whatever you want.

Also, even if it didn't offend my limited sense of style, and wasn't obviously way too warm, I still think it would be impractical for my rather physically demanding lifestyle. Running may not be a problem, but I'll bet crouching, climbing, and martial arts (particularly the kind with a lot of elaborate foot work) are not going to be an option, which means I probably couldn't go a full day in one.