I always assumed this wouldn’t work, but I measured the Magnet’s max width grip at 77mm if you really pull it. It looks like the Ibanez RG8 is 80mm at the 24th fret, and probably less by the time you get down to 17 or so:
Anyone have an 8-string and try this yet? I’m guessing it will work just perhaps at a lower fret than where the neck meets the body.