I don't know what kind of pockets you have but my OQO fits in my shirt pocket (although just barely - I usually carry it in my front pants pocket). It's about the size of a package of 3x5 index cards - a bit wider and longer than the N810 but mainly thicker.

And, except here, when most people say tablet they are not talking about NITs. If anything they are talking about even bigger tablets in the 7-9" screen range. If you look at Google News for Year of the Tablet (a CES catch-phrase) you'd be hard pressed to find a mention of the N770, N800, N810, or even N900.

http://news.google.com/news?q=year+of+the+tablet