When I saw this thread title, I presumed that the discussion was about those a/c with twin props, counter-rotating from the same engine/s, as in Shackleton. It is interesting to see that the thread has equally covered 'handed' rotation on single prop engines and the problems caused by loss of one engine.
On another side ... I am glad to see that the Americans have been witholding technology from us from P38 days and before. It would be sad to think that they had only just started treating us like dirt. But then, if we have a Presi Minister that allows us to be so treated - we get what we deserve.