I installed the RUU and used App Manager to back up my apps. I have noticed 4 applications so far that it did not back up out of about 75. Apps purchased through Android Market can be downloaded from Market and installed again without repayment. Apps re-installed with App Manager are no longer connected to Market thus no update notification for those apps. I may reinstall them from Market just to get that connection again. If you have your contacts and calendar in your Gmail account, then once you have configured that account again on your phone, it will push your contacts and calendar events back to the phone. I synced with HTC Sync for contacts and calendar for redundancy but did not need to invoke a restore sync from HTC Sync since gmail did the job.
I catch myself slightly tilting the phone to the right and it quickly goes to the right side landscape mode. Training issue on my part not to do that.
Got 1173 on Quadrant score, did not check before move to 2.2.
Have connected my bluetooth headset but have not tried BT dialing yet.
Phone call quality does not seem to have been corrected and no mention of it in the list of fixes in the Verizon upgrade documentation.
Do not see any improvement in phone signal bar indication.
Do not see any battery life improvement as I had already done all the mods listed on the forum which greatly inhanced battery life already.
On the good side, there are some great new features such as Flash support and see no backward steps in the build. Overall good job HTC, they made an already great device better.