The skin makes the back somewhat better to hold on to.
Not a slick surface I would say.
Yer wood grain skin is not soft or rubbery.
I believe a lot of folks get the carbon fiber for it's design and because it may provide more grip.
This is the brushed steel look from ajamils post further back in this thread.
I don't care for the carbon fiber skin, but I like the woodgrain and the brushed steel (thanks for that pic).
I might give it a try. I ordered a fairly inexpensive case and it's ok, but I really like the idea of the slim tablet on its own.