On the first -- yes. The reason for posting was to have people who are knowledgeable about this comment on it.
But on the latter -- it's best not to have any shocks down the line. If they are determined to get Churchill, then his scholarship better stand up to muster.
Moreover, it's the details that can and will be used to obfuscate the big picture. That's always been the fate of left scholarship -- it has to be better, more careful, factually impeccable. Look at how Niall Ferguson can be feted in the 21st century for a celebration of empire. If the same quality of work had been produced by someone against the empire, it would have been torn to shreds.
Anyway, if it can be shown that the Brown's are guilty of fraud and falsification, then the freedom of speech stance on Churchill becomes much, much stronger: they've been looking for a way to get at him, and now, they are using this odious bit about "little eichmanns". Then the contribution of the Brown's would be, in my local speak, an "own goal".
kj