The main feature of these 2312E motors seems to be 'torque clogging;, WiKi says:
Cogging torque is an undesirable component for the operation of such a motor. It is especially prominent at lower speeds, with the symptom of jerkiness. Cogging torque results in torque as well as speed ripple; however, at high speed the motor moment of inertia filters out the effect of cogging torque.
So I guess apart from a smoother, lower speed flight, maybe it might reduce the 'cracking' of the arms on some people's Phantom's also?