Don't think guards will be happy with that decision in the peak at busy underground stations. But I recall a change many years ago when passengers began wearing fluro orange that worked in warehouses etc.Yes my main concern is the impact it will have on dwell times trying to spot the CSA at places like Town Hall etc in peak hour, given the move to grey and blending in more with office workers etc. Also if there is a emergency on the platform, how easy wil itl be for those needing help to spot the CSA?
It caused confusion among staff. But ultimately only one person should be holding a white flag. I do ponder if it is a cost saving exercise.
Just from my own experiences since the removal of wearing vests on the barrier at my locality, there have been a number of people coming up asking do I work here , where there was previously never that issue when wearing vests.