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I am, if you shoot by the ocean or blowing sand or embers, it's particularly a good thing IMO. I actually shot a post NCAA championship street celebration and the bonfire embers ended up permanently damaging the protective filter, seared blobby dots across it. Nothing that cleans off.
I was referring to the "UV filter 100% of the time" crowd. Of course, its much like sex...use protection only when absolutely necessary.