I first heard of Christopher and Banks, when I was about 13 and they carried a lot more skirts in the stores then they do now, but they do still sell some and usually ones without slits in them.
Here's a couple of pictures of my favorite denim skirts from there, this skirt has served me well during camping trips, snow, rain, shopping, gardening, pretty much any and every occasion, and is my absolute favorite for house cleaning! :)
~ click on this link for a C&B store locator