A fascinating debate, although I'm sorry to say that I know little about the VC10 and less about the Concorde, from a professional level.
However, I would comment that suggestion that certain radical manoeuvres are flown in the sim, may be meaningless. Sims are designed to accurately simulate middle-of-the-envelope handling, they will extrapolate happily to all sorts of corners of the handling envelope, but this is rarely on the basis of actual flight test data.
Far too often something happens, and you later read "30 pilots all tried to achieve this in the sim, but couldn't, so the pilot in the actual case was superhuman", which is complete sphericals. The sim was probably not accurately representing what happened - because to do so somebody would have to go and obtain meaningful FT data. And, quite honestly, very few test pilots are that daft.
G