I've just got the other half the new Viewty as an upgrade. I was a little sceptical at first after reading the review in Stuff magazine.
She fancied either the SE W910i or the Viewty and after looking at the 2 instore, I must say the LG looks a much nicer, classier looking phone.
Anyway with O2 you get 14 days to try out your new phone as an upgrade, First impression are great, it looks cool, but I would say it's more of a MP3 player, video player and camera than an actual phone, that's not to say that its not a good phone, it's just some people would prefer proper buttons if using it mainly as a phone.
The jog dial around the camera lens is used to skip through the menus as well as the camera zoom, which makes it a little tricky to use as its on the back of the phone when scrolling through things.
Battery life is also a little suspect, but that is mainly down to the large touchscreen, sometimes lasting less than a day.
As for the comment about the flimsy back cover, the cover is actually metal and is thin but quite strong, unlike most other mobiles I've had which have been plastic and definately flimsy!!
Anyway still evaluating it at the moment so will give it another week before making a final decision on it