I never used one, but saw a news article that a some people have had a strong skin reaction to the chemicals in the Magic Eraser, (human not aluminum skin that is).
Another problem with the interior vinyl skin is it tends to continue to leach out an oily, sticky residue as it ages. There are a bunch of threads on this if you do a search.
Sail on silver girl. Sail on by. Your time has come to shine.