I went ahead and got myself one of the HP MiniNotes that have been so popular on the net.  I will say that my initial impressions are that the keyboard is going to take some getting used to and that the screen is one of the smallest and most difficult to read that I can ever remember seeing.  But the machine is so small that you can take it anywhere.  I plan to put it into a Timbuk2 bag for the time being until I can find a case that makes sense for it.