We run an mg640 along side an epson but there’s no way I would run one as my only printer. It’s far too slow. Below is what I posted on another thread about roll to roll uv printers. You’d be better off with an epson s80600.
“You can print white and cmyk in a single pass on the Roland. Gloss varnish is added on a second pass, so if you’re buying for the spot gloss effect, it will be even slower. Roland will print matte and gloss effect like the Colorado, UV inks are matte by default anyway.
How clean is your shop? Dust is a huge issue with spot gloss. We have never had an issue with dust or debris in the prints but spot gloss shows everything. If you run an extractor for the smell, it sucks in dust from the room so you need to set up a clean room.
Other than that they are really smelly, black ink is not opaque, prints are rough and tough to laminate, and it cleans for 1-2 minutes before every job. We bought one for decals and it seems to make the vinyl brittle too, so not great for that either. Cutter accuracy is also poor after using Summa cutters.
Honestly I don’t see the point of roll to roll uv printers. We thought we could offer more with this machine but it has been disappointing.”