Thanks for the write-up. I'm quite curious about this bike, and want one. (though I can't justify it) I have a nice hybrid that I ride all the time, and my Curve D3 that I ride occasionally.
Have you any idea what the differences are between the Jack and the Espresso, aside from color? I didn't compare all the specs side-by-side, as it is too cumbersome with the way Dahon's site is laid out.
But it appears the Jack has a better seat and better tires. (Schwalbe?) Maybe a better derailleur too?