Ah, thanks for the explanation. I see your point in the mechanics aspect, it seems really effective. It still kinda seems outlandish to me though, mechanics aside, but I can kinda see it with wicked spikes being a cool concept. I'm just trying to put myself in character and think what would lead...
Don't take this as an attack on your build, but... could you explain the what the draw is to dual shields? You're not the first person I've seen to try it and I picture a guy with 2 shields and it just seems like a ridiculous concept to me. Or is this purely an optimization type of thing?