"with backs to the hallway" - depending on how far away the hallway is this can be distracting. In the past I've sat with my back maybe a 1.5m from a wall, and the space between was used as a standard route by countless people - distracting.
Again, I totally understand the "it's distracting" argument, I have made the same argument myself. I was pointing a finger at the "I don't like it when people can see my screen" argument.
