Johnman,
What are you saying here? That there is no off switch on the AIrbus' dome lights, or that procedures recommend they are on all of the time? The A320, A321 and A330's we operate have off switches on the dome lights and many fly at night with them in the off position, so you can get a dark flight deck. The other lighting is different in all 3 of these versions, though. Do you fly the more modern versions (A340-500/-600) and have they decided to omit the off switch on these?