I finally got my G2 upgraded to Android Gingerbread (2.3.3). I've been on-call for work since about two seconds before the update notification, so I wasn't able to do the upgrade then just in case it went awry and put my phone out of commission.
The UI changes are fantastic, the WiFi calling feature no longer freezes after a couple days of use without a reboot, and the market is vastly improved. If anyone else is waiting on updating from Froyo to Gingerbread do it!
Anyway, this update also added Google Books to the market service. I use Nook, and have been using Nook for quite a while. Has anyone here used Google Books, and if so, what was your experience?