This looks interesting! I have been looking for a smaller and simpler audio interface for travel. Please keep us posted.
Sometimes I travel with a MIDI controller or three and an old (bigger) USB interface. Most of the time I do not need "legacy MIDI" connectors or even a line/mic input (not when traveling for just a weekend or a few days). Just a decent quality, low latency headphone driver (using ASIO) is all I need. And thinner, smaller, lighter, less fussy, no power supply needed; these are all good features when it's time to repack my stuff after the TSA is done pawing, probing, and sniffing it.
Edit: Oops, I see now it needs a wall-wart. Too bad.