evanmillerWe don't have any additional pictures of the natural CXL, but if you google around a bit you'll find plenty.
No options for other soles on this drop, I'm afraid. FWIW, I think leather soles are fine in a bit of moisture, as long as you're not totally soaking them by walking through puddles or something.
http://www.rancourtandcompany.com/blog/2013/02/12/the-best-rubber-soles-in-the-world-lactae-hevea