I remember seeing something similar to this for PowerBooks ages ago, but this one looks better thought out.Basically, you attach this aluminium and leather handle by undoing a couple of screws on the back of your laptop, putting the Case-Mate on and then re-inserting them.
When not in use, the handle becomes a small stand, elevating the rear of the laptop slightly and also functions as a heatsink.
My only concern is that the handle is not centred on the edge, so the weight may not be well distributed.
