Is black plate worth it?

[silhouette]

I like the idea of making the black steel armors all just ignore the armor piercing effect -- call it a new attribute "hardened". It doesn't make them uber or at all enhanced vs mundane opponents, but negates the AP advantages of many opponents first choice anti-high-prot strategies (crossbows, fire evocations, fire bless, thugs with AP swords, and the weapons of sharpness enchantment). And it can add synergy with their own arbalests and fire magic from smiths. (Would not affect AN attacks).

Sill