Emissive armour - what is it used for?

[Trachmyr]

What would be a lot more useful is if the armor had a divisor... say only 2, that would divide all damage by 2 until that armor was deystroyed... damage would always be applied vs. the armor with the highest divisor first. Even a divisor of 1.5 would be nice, and I don't think that would be too hard to code in, nor too unbalancing since as soon as the armor is gone, so to would be the the divisor.