This reminds me of a conversation I had with a coworker a few days ago about the state of phones and the rising trend of the "Phablet" I pointed out that I am getting bored with the size of my iPhone 5, and despite the awkwardness that would come with a larger screen, I believe that is eventually going to trump the ergonomics of using a phone with one hand.
To me, I would LOVE if Apple just stuck the phone capability into the iPad mini, or something just a little bit smaller. (Being serious). That would introduce a challenge though, how to use the phone with something so large/awkward. Obviously bluetooth headsets pose one solution, but some people don't like talking with those. This clip isn't the answer, but it makes me wonder if there is some way to streamline the design of a "Detachable" portion of the iPad that could double as a handset/phone when disconnected. Anyways, just rambling, but Apple is no doubt watching the "phablet" trend very closely.