OP
Adam W
As you said earlier it depends what they're being used for - in this case in a hallway, which IMO is fine.I think you have missed my point, i was trying to say although it may be possible to siwtch a EM doesnt mean you should. I was thinking along the lines of Exit signs, you could switch them doesnt mean you should.
In the case of an exit light it probably depends on the likelihood of the light getting switched on when it's needed; in most cases I'd say it's fine to have them switched.