This is exciting news, and I'm looking forward to seeing the quality of the backglasses, in particular. I have a couple of backglasses printed using state-of-the-art equipment from about 8 years ago. I am happy with them overall, but you can notice some of the colors aren't quite as vibrant as the original for reasons explained above. But what is more noticeable are the line pattern (striations) made as the printer head passed across the glass. Also, translucent areas that should only be clearly visible when backlit (i.e., match numbers for instance) were somewhat noticeable when not backlit. Finally, the areas that are supposed to be completely opaque still transmitted some light, even though they used 2 layers of black ink (instead of the traditional silver ink) to mask those areas.
The backglasses I have from 8 years ago are presentable (and I'm probably a little on the picky side), but I look forward to see how the technology might have improved over the years.