It was a photo shoot for classic mechanics. I think it was a guy called Chris riding it. Very impressive wheelies, he was in 2nd or third gear for that shot.
He asked me at least three times if I minded. I was up for seeing a g/s wheelie as much as he was. Those forks are a little fragile though and one cracked when the wheel came down. The output shaft bearing didn't like being under load with the oil down the opposite end of the box and called it a day.