I only went back when my full-time PUP was withdrawn, Watty. Most folk, myself included, were vaccinated at that stage and I figured the screen negated the need for a mask in the vast majority of cases. I didn't catch COVID '19 anall to my knowledge anyway... although I did have a weird health episode shortly before it became a thing... so I could have acquired some degree of immunity from that if it was COVID '19 anall, I guess.
Also, I did advocate masks for taxi drivers before vaccination and long before public health / NTA advised the same... while others on here and elsewhere saw fit to hurl abuse at those drivers who elected to provide a service during the early waves.