Totally amazed by this handset, have had it since it came off the delivery truck at 9.30 at the Orange store in Cheltenham on Wednesday.... sad I know!
Did a full review HERE for you all to see my thoughts.
Have to say this is the first phone I have seen / used / had that is a realistic competitor to the iPhone. It trumps it on many levels (apart from the vastness of the apple app-store) and I would urge anyone to have a good go with it!
As for the "chin" at the bottom of the handset, it actually makes holding it much more comfortable and makes sense for navigating using the scroll-ball, or buttons at the bottom.
As for fitting in your pocket, can't say I find it uncomfortable, but then I don't wear skin-tight trousers like some people!
Ben