The Moleskine/FieldNotes/HipsterPDA design poseur-types are going to eat this up (first) followed (as usual) by the iStuff crowd. Coincidentally, of course, I love everything about Little Printer. The face indicating print completion is pure anthropomorphic genius.
Expect the usual underwhelmed critics who will roll their eyes and inform us that thermal printers are nothing new and how anyone could build their own better model from old labeler parts and 4 lines of code. Once again, they will miss the point.