So after having the phone for a while
Rooted, running Cyan10, BlackWidow I think, based on the Cyan10 frame, no undervolting or overclocking (really waiting for it to become as nice as it was with the DX and Android Overclock), I can safely say the battery life is amazing. I don't use my phone much, but when I do, it doesn't disappoint.
Right now, battery stats are 16h 21m, at 69%. Highest discharge from Slacker Radio and mediaserver. It probably won't be charged again until tomorrow, and that's just because of how slow burning the battery is with this infrequent use.
Huge plus, don't see it getting worse, when I'm at 17% and deciding whether or not to go to school, I end up just letting it be and it gets home safe and sound 12 or 13%. This is a monster battery, I haven't seen a smart phone that can compare with this thing, and I don't know how I'm going to get back on crap battery with the next phone if this isn't universally adopted or improved upon.