Im at the office, so cant test until tonight myself, but remoted into home to grab it. LOL. The JPN one apparently did not work even with RegionFrii, so would be nice if this worked. Otherwise wait 2 months for the PAL one!
When the iso's first appeared, i got the red steel USA one and burned it before modchips were out and kept it to try later on, i assumed it wouldnt work because it is reported on regionfrii as not working USA-PAL region switching, but works as an untouched USA iso on my PAL machine with WiiKey.
Hats off to the modchip people, never imagined it would be possible so soon after launch. Genius's.