I have an old mixte frame that I commute on. I wear skirts occasionally, and it works just fine.

I do have one issue though - wind. When the wind really whips up, I find myself snatching that skirt back down too often for comfort. It's dangerous. Anyone have any ideas? I'm thinking of tying some type of weight to a clothes pin. I could clip it to the edge of the skirt and let it hang between my legs when on the bike to keep my skirt down?