I participate in English Country Dancing. Many of the dancers in that community also do Contra, the American style that developed from ECD. (I haven't tried Contra yet, though).
Anyhow, apparently some men in the Contra community enjoy wearing skirts for dancing. For instance, in this video, you'll see an older man in a blue shirt and a long skirt:
Apparently these men like the feeling of their skirts billowing out as they swing.
I've worn both pants and long full skirts while doing English and Scottish Country Dancing, and I must agree that the motion of the skirt does add an extra dimension to the experience.