Why all the hate for iron covers? Why are wood covers apparently OK (yes I know that they protect the graphite shafts, but if you keep them above your irons that is not an issue)? Let others do as they please as long as it doesn't impinge upon you.
I have always used iron covers because I use forged, and I have never had a spot of rust on any of them. And, when I occasionally ride, the banging that the clubs go through is pretty harsh.