I would absolutely love to import this into OSM, but the data is locked behind their API (which has access restrictions).
? So basically, the data is public domain, if you can get it?
Correct, for now. We're currently evaluating a dump method as well, but haven't been able to put much time on it as we've been busy working on our API :)
A snapshot would almost be infinitely more useful for me to start developing with your data!