I believe the signature refers to his riding prowess ;D

Spot on. :D But I thinks it refers more to my mental state than my riding prowess.(I hope ! :-[ )
I haven't had an off since the late 80's when I was still a motorcycle courier. I wasn't on my K75S that day, I was actually on Mrs Laverda's Guzzi !! She still hasn't forgiven me for that !!
I see you're from down under, my (Life long) mate is just about to head to OZ, he's got an unconditional acceptance & will be selling nearly all his bikes,(exept for one!) He's got a nicely sorted K100RS, it's one of the last ones, with ABS, three spoke wheels etc......I would be tempted if I didn't already have the K1100LT he sold me when he went out to Oz a few years back for an extended stay.