It's not quite true to say that the VGS have suffered no accidents in 30 years, I recall one very serious accident at RAF Sealand in 1995 where two Vikings collided resulting in two fatalities and one serious injury. I believe this is what prompted the high-vis orange stripes on the wings.
I'm ex VGS from the mid 90's and I do recognise some of what is being reported here, although a very different culture existed back then. I don't recall seeing any 'walts' at my unit, most of the instructors were professional pilots for a day job and had no need to pretend to be anything else. Now I come to think of it I can think of only one 'walt' and he joined the RAF where he continues to be a very active 'walt' and pprune member to this day.