bobbi,
I think it depends on the individual officers.
If you get caught, you usually would just go to court and bring proof that you'd paid for it. Can you print out a receipt for the time being to carry around with you?
And put a bug into those DMV people's ears, you might even be able to get a note from them...(I knew someone that went to get a note to carry around with them with similar situation)
but I think it comes down to the individual officers that might pull you over.
http://forums.officer.com/forums/showthread.php?t=70470