Well technically you can reverse back if you get a good local backup (not iCloud) and archive it. Then if things don't work out you can DFU restore to the release version and use you archived backup and BAM you are back. A little effort? Yeah sure but not to bad. Now as far as THIS version, it seems very solid and so far I have seen no reason to want to go back. Most posts here also reflect that. There are a few, "well there is a shadow here for a micro second when you do this or that" or some other visual abnormality that is not 100% perfect but lets face it, there is never any version, beta or not, that is. As for battery, it doesn't seem any worse but if it is an issue, well there are so many options (car charger, battery pack, battery case, a household receptacle, etc) that is always available, unless you are off the grid, to give you a boost. Hell plug into your computer while complaining about battery life on a MacRumors forum. 🙂 These phones now charge so fast it shouldn't be an issue to get thru a day.