I personally haven't had much luck with running Aux2Bat on my Jem Dread, and I'm using 3 purple tech doffs. While I understand the methodolgy, slow hull regen will kill you flat if your Aux is zero'd out 90% of the time, especially in PvP. To be honest, I have much better luck cycling two AtSiF2, not to mention the damage resistance it gives you. While I have the Jem Space Set, my shields are spikey when alpha'd. I'm currently testing 2-piece Borg with Adapted Maco shields right now. So far, it's seems to work a lot better with hull heals and keeping my shields up.