I'm running Aux2Batt on mine, and have for a while now. I find that it works great and am dishing out quite a lot of DPS during matches (when I time it correctly).
My team build for my bug was two rsp1's with a heavy reliance on my team mates for hull heals. A rsp every minute is pretty nice for an escort imo. A 2x aux2batt build means no rsp's (not that rsp is a must have ability). the attack pattern doffs would work great with this build keeping your hull resist and defense boost up at all times. Running 3 engies on the build also gives you the luxury of being able to slot an ET1 on your escort which is incredibly useful in the current environment. Use the other doffs for emergency power cd's, and slot a EmtS1, and a EmtW1