Why even run a license plate cover, then?
No law against NOT having a plate cover in AZ, as far as I know.
And I agree, the new law is plain dumb. Another way to generate revenue.
A DPS officer puled me over one day on the 60 at Gilbert for the very same reason. License plate cover covered part of the top of the plate. I asked him if he was a n00b. He looked at me funny and said "Excuse me?". I sighed, and repeated my question "Are you a n00b? Did you sleep through the class where they taught you how you can't enforce equipment that's legal on vehicles registered in other states even if it may be illegal in AZ?? Did you even notice the vehicle is not registered in AZ?"
He ran my name, came back and told me "have a nice day" with a tone that said "screw you, arsehole!". I LOL'd and went on my merry way.