I wouldn't be terribly surprised if the reason they didn't pick a single oily skin one is because they actually already plan on adding skin shininess as an option down the road. Hence, letting one win here would just be redundant (not to mention, as a body paint it'd be more restrictive than just adding a skin specularity slider to the character creation).

What I am surprised by is that multigun camo actually winning first place. Too bad I don't like any of the other winners, but eh. I don't expect much from these anyways.