I actually kinda like the idea of a shield having its own armor pool that regens. A shielded target would actually have to be handled slightly differently from a tactical perspective. It would be hard to make sure that it didn't get unbalanced though. But the truth is, with it adding 1AP to your weapon attack, it needs SOMETHING that it gives you on a turn by turn basis. a second weapons gives you extra damage every attack, multiple times a turn. A shield needs a constant bonus. At its current state, it makes sense to use a shield for turn one, then unequip it after your armor is gone for 1AP attacks.
