What would be useful on their site would be a comparison showing the same image shot with an unmodified sensor and then again with their filter-less sensor. If no one can tell the difference, is it worth it?
The problem of RAW conversion remains because every converter will still de-Bayer files from such a camera and thus degrade the IQ.
I don't know, seems like the conversion works well enough. You're always going to edit and change files in export anyways.
The site has a page explaining how to get around it.