Gene, thanks for following and reading. Guess that you’ve already answered your question. ZUIX.js looks attractive, however, it is fresh and unknown. It needs some time to get stronger, gain contributors and support. We haven’t received any requests on custom development with zuix, but that may change quickly, who knows.
The main idea is that companies will hardly rely on newly-fledged technologies. They have to entrust their business (read: dream and hope) to the newbie and if this newbie doesn’t get support and general recognition, their business will fail as well. That’s too much of a risk.