Multiple duress PIN's?

Is it possible to have more than one duress PIN (or to have this feature added)? The reason I ask is that I would prefer to set each of our duress PINs to our ATM PIN's. I figure that in a stressful situation it is wise to have a number that comes to mind very easily and naturally... rather than having to take that extra second or two to 'remember' your PIN.

Also, if the dispatch center calls me and I give them a safe word that is not correct, will they consider that duress situation? Is there anyway to have a specific duress word?