I had an ink pen leak in my pocket. Ruined my jeans, and the leather seat as well. Leather isn't nearly as waterproof or stainproof as Neoprene. Plus neoprene doesn't crack and chap. Another voter for Wet Okole's. I've had mine for 4 years, and they're still awesome.
Correct me if I'm wrong though, aren't the wet okoles neoprene, covered by some sort of thin layer of fabric (which gives the covers the different colors like gray and charcoal). So wouldn't that fabric be just as susceptible to surface stains as cloth seats?
I guess what I'm saying is that the top of the wet okoles aren't waterproof, the bottom is, right?