I occasionally wear the traditional Scottish style kilts and once in a while the UtiliKilt that's a modern solid colored kilt.
My workplace has no policy regarding kilts. I suspect that many managers would consider it a distraction and wouldn't approve.
Reactions vary when I wear them. The bear & leather guys tend to really like kilts. The twink/younger gay guys, as a rule, don't. I think there's a higher herd mentality and desire for conformity when one is younger...
In general, wearing one out isn't really a big deal. You'll be noticed, there'll be some comments -- more positive than negative -- then people will get used to it.