I enjoy it when, for firearms, it makes the weapon less accurate or more prone to jamming. I do not like it when it somehow makes the weapon less powerful, which makes little sense.
With armour I think it should reduce the chance of armour being effective with a small decrease in overall damage reduction. Armour penetration attacks reduce the chance of armour effectiveness whereas pure damage attacks would reduce the armour's damage reduction.
With melee weapons it would make sense that slashing weapons do slightly less damage eventually breaking and being useless while crushing weapons have decreasing armour penetration stats, eventually breaking and becoming useless.
With armour I think it should reduce the chance of armour being effective with a small decrease in overall damage reduction. Armour penetration attacks reduce the chance of armour effectiveness whereas pure damage attacks would reduce the armour's damage reduction.
With melee weapons it would make sense that slashing weapons do slightly less damage eventually breaking and being useless while crushing weapons have decreasing armour penetration stats, eventually breaking and becoming useless.