Wirelessly posted (Mozilla/5.0 (iPad; CPU OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)
Not bad so far, 88% after 1h5m of use and 2h33m of standby. 30m of 3G streaming with slacker on my walk to work did not budge my meter from 100%, I downloaded 7 songs from iTunes over 3G (screen off), and the rest of the time was light 3G browsing. Not seeing much drain in standby. Last night, I meant to keep it plugged in even though it was at 100% before I went to bed. Fell asleep before I could, woke up with it at 99% with wifi on all night, 6 emails received (gmail fetch at 30m, system services locations off). Let's see if this holds up! I don't have iCloud enabled for now.