Doom Saber
Super Freak
Doom Saber, if your eyes are up to it, I think it would be pretty easy to paint the crocodile pattern, especially if you use textured paint and shade the colors. I've painted at least a couple of pair of real leather boots with acrylic paint and I haven't had any trouble with flaking or anything like that.
I was browsin on store-room and think this might be a good reperesentation for Gene's boots despite that it isn't accurate