I did hear that they were becoming non type-specific, but that was a while ago.
I can see the difference between being properly in the murk and wearing foggles, but we are really talking procedures here, and there are ways of darkening the windscreen to make it as realistic as possible. Instruments is instruments, regardless of how many engines you have, and I see no reason why it has to be done in a twin, especially as currently you will be doing another one on a twin when you join your company. All this does is make people fight the twin rating as well as the IR, which is not really how it should be. A lot of the high cost is because of the twin stuff.
Phil