One of my brothers was a photographer and on snapping Alvin Lee and Ten Years After at a Plymouth gig back in the mists of time, he was asked on the spot to be their official photographer and muck in roadie for that tour, which he did. It was so laissez faire in those days.
For all you oldies, a good friend of mine is still managing/roadying Colin Bluntstone, ... you have to double up roles if the budget doesn't stretch anymore ... a bit like runninmg a football club.
What else are you going to do.