I don't know much about that white park one, but from what I've read the Duke looks pretty solid. Its got some metal in it so it will be more durable than the Naxo or Fritschi, but will also be heavier. Not a pure AT binding, but then if you are going for that, you might as well get dynafits.
It has a low stack height and 6-16 DIN so I see this as a very option for people who ski a lot of alpine but enjoy going into the slackcountry, not hours-long touring. People are speculating that if you ride a 70/30 Alpine/AT mix you could get away with this being your only binding. It is a Marker, but the toe and heel piece look like they've been stolen from a Fritschi and a Look respectively, so it could be fantastic. If Rossi or Salomon had come up with something like this it'd be a fair guess that the pre-orders would be full already.
I'll save my personal thoughts on it until I have a chance to ride it. I don't do enough touring right yet to justify adding a 4th pair of skis with Dukes on them just yet (though Coombas+Dukes would be fucking sweet!) so its just trekkers for me right now.