To me this is one of the big advantages of the 770. By leaving it on I can just pick it up and use it, rather than wait the extra few seconds it takes to get a laptop out if hybernate or standby mode.

And the wireless shuts off automatically after use even if I don't replace the cover.

I think they should have stressed this in a quick-start guide, I didn't know at first whether it was intended to work that way or not, and it would be easy to just assume that you had to turn it off after use to preserve battery life.