Like many others I awaited the arrival of the Passport.  Now that it has arrived it has more than I need.  I have been writing to my laptop for many years.  At this point in my career, reading glasses on the tip of my nose, I not only rely on my laptop screen, I need it.  I have managed to accumulate a lot of "stuff" that I bring along with me to all jobs.  As a consequence my concern nowadays is to lighten my load, so I'm looking for lightweight smaller equipment. After the long waiting period for the Passport's arrival the answer to my question is probably laughable. 

Have you considered a trimmed-down version of the Passport with just the basics?  Your screen is too small despite its advances.  It may be nice for some but I need my laptop screen.  I need to get my case up over the heads of other commuters on a train and reach the overhead rack with poor leverage.  I want a paperless writer with USB, suitable memory, wireless connections.  A writer with modern electronics in a lightweight trimmed-down style a third of the price of a Passport would fit the bill.