I'm not familiar with Rolands, but I have an Edge and this is how I print them.
Clear vinyl with process foils plus white and either dark grey or black. What is going to be viewed from the outside is printed first in reverse. Then a flood coat of white, flood coat of black/dark grey, flood coat of white and then the print that will face the inside printed regular (not in reverse).
The white/black/white in the middle creates a blockout so that the images doesn't bleed through from one side to the other.