The RollsRoller is amazing. Since I'm a supplier and not a sign maker I don't get the opportunity to use laminators or apply graphics as often as sign makers like yourselves, however when I do have projects like creating samples or promotional items etc I use the RollsRoller. I applied both laminate and graphics to substrates like Corex with it. I'm not sure I could do a good job any other way.
We built our own and after having done so, I would be more than happy to purchase a RogueRoller next time if they decide to make one that's 5' wide for not much more money. We're very happy with ours now but it's tougher than you might think to build.