The rise and rise of hi-viz

Hasn’t hi-viz clothing caught on! No doubt driven by OH&S regulations (rather than any overt social engineering) a whole  sub-strata is now clearly identifiable. There are lots of interesting questions raised by the new hi-viz hegemony.
The first and biggest for me is: If you had to go hi-viz would you be lime-green or fluro-orange?
More seriously, [...]