Bought in Kings Heath, Birmingham. It works in that it charges my iphone 4 and has audio out. Don't know about ipad!
Edit: Been using it for a couple of hours now, with it attached to computer by usb and through some speakers I had, works fine. Syncs normally and it is a pretty snug fit. I have a 'Speck' cover on my iphone 4 and this DOES have to be removed.
Tried it on a Bose soundwave and again, sounded fine but I am no audiophile. Strangely though, it continued to play after I had disconnected the USB. This was the same with computer speakers. Didn't charge like in this mode though.