Much of the discussion in this thread has been on the technicalities of asymmetric GA However; I would be interested to hear views on the philosophy of instruction particularly for students who aim to fly larger JAR 25 aircraft that in general do not have need for a committal height.
One concern is of negative training, where the necessary awareness of committal height in a light twin is then transferred into commercial operations and leads to reluctance to GA from low altitude. First learnt, best remembered.
In addition, how do the instructors on the heavier JAR 25 aircraft, un-teach those different aspects between training aircraft and commercial operation. I exclude the problems of modern avionics etc; at least until a Cessna 172 has a HUD.