Yep. That's a concern, I think. We have to charge it a lot if we use it a lot, but then we can't plug it in and let it charge without a reminder to unplug it.
I want this phone so bad. But this is one thing that may be a show stopper for me. In order to have battery, I typically have my phone plugged to my PC all day, then into a mount and car charger when I'm driving, and then on teh wall charger while I sleep.
If I end up using it w/o being able to charge while drivign (when with someone else), it would die way too quick.
There is no such thing as a perfect phone ;-)