As far as I'm concerned, the subject of wet location covers is a minor issue. More important is the fact that there are so many GFI's that no longer provide protection. A couple of years before UL tightened the standards for GFI's, I believe there was a study that showed approximately 17 percent of the installed GFI's were no longer providing protection. The author should have come up with suggestions that would get the end user to actually push the test button once in awhile.
I personally do not like GFI breakers. If users are not testing the receptacle type GFCI as often as they should, if ever, then it is really unlikely that someone will actually go to the panelboard to test the breaker.
