The reason I asked also about the coveres was in '00 (the year of my car) I did go to a post and asked about the inspection, as I worked as a detailer at the time and saw cars in the place with the stickers. My car was turned down because of the covers. I was told "They keep the salt and dirt off the tags, so they aren't really liked." Seeing my now in-laws' tags all rusty makes me glad I use the covers, besides the spray paint on the backs.
Any guess as to when or if the state actually does go to plastic tags?

I'll send an email to their site and inquire, as well.
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"--Doctor Who
"I'm running this monkey farm now Frankenstein, and I want to know what it is you're doing with my time?!"--Captain Rhodes