Yea, it is.
I didn't cover the GC in frosting, though it looks like that. I put tape and paper underneath it. Frosted it, took the pic, then removed the underlinings I had made. True, some got on the machine, but nothing a slightly damp cloth couldn't get off in a few seconds. I did get some under the crystal lens thing at the top, but that was a quick fix.
I played Viewtiful Joe without issue afterward.