I don't abuse keyboards. I don't care if the plastic housing is strong enough to stand on. and the blackwidow Elite doesn't really have anything fancy. The only "luxury" is macro keys, which i probably won't even use.
To each his own, I guess.
On the topic of cleanliness - I'm not overly anal about it but I hate using other people's work computers, especially when their mouse is clammy/warm or where they've been resting their arm is warm - for some reason this just grosses me out.
So I usually just control their mouse with my fingertips and my arm hovering above their desk and tell them to type. One guy (god bless him) has some dandruff problems and his keyboard is covered in skin flakes.