>>13766811Unlikely, but I've heard that interpretation from some people. Freeze Skin says that it "powers up those moves" and so is unlikely to do that to attacks hitting you.
Plus, it wouldn't make a difference. Rock already resists Normal, so changing it to Ice to resist would have the same result. Unless it somehow ends up as a Normal/Ice attack and is 4x resisted in that case, which would be unusual (and welcome).
