A couple of observations, if I may.
(a) overspeed V2 takeoffs are entirely optional provided that the spare runway is available and the data is scheduled in the AFM. That is, the procedure is not related to whether the takeoff could have been performed using min V2 speed schedules.
(b) the procedure is not much use if you have close in obstacles. However, with a significant obstacle in the latter part of the second segment, one might obtain a better RTOW. It comes down to a geometric consideration.