I'm at a work-related conference this week, and have worn a kilt most of the time. I've gotten a few "skirt" comments, which seemed to break down into two categories:

1) a couple of guys I know pretty well whom I know are doing it to pull my chain -- these I usually just ignore

2) there were several others who used "skirt" and I had a distinct impression that because "kilt" wasn't part of their everyday vocabulary, they used "skirt" because the right word didn't come to mind as they were speaking. I sensed that no offense was intended