I have been using the Logitech Ultrathin key board cover for approximately four months.
As a concept it is brilliant. In use, as a key board it is a wonderful addition to the iPad...
I bought the Logitech Ultrathin to add some protection to my iPad screen when not in use. The clam shell design of this key board seemed to fit the bill until I noticed that the gutter part of the key board, into which the iPad is placed when in use, has damaged the screen of my iPad. I now have a faint scratch line appearing across the screen.
I have made an appointment with the chaps at my local Apple store and I am hoping they can both sort my own machine, and perhaps direct the folk at Logitech R+D to resolve this design fault.