Yeah, I've done it this way too, but I always used MS PowerPoint because it's easier to do the visual layout in.
About 10 years ago I made up a sheet of License Plates for GSL, all 50 states that said GSL, and whatever version it was in Roman numerals.
Anyone that attended that GSL got a sheet in their goody bag. I used to print them on a Canon Laser Copier(not a home printer) and then laminate them on both sides with a clear 5 mil gloss plastic. They came out great and crisp!
The plates were all produced on Acme License Plate Maker then sized and paired on the sheet in PowerPoint, then printed and laminated.
Here's a sample of a plate from Acme...