bigglesbrother,
It's a Saturday night, this has indeed been done to death but here goes.
If you cannot understand how any rolling manoeuvre has a significant impact on the geometry of a vertical manoeuvre and you insist on calling a barrel roll/quarter clover a "loop" then I have doubts about your credentials to comment. Perhaps you should ask your brother (or even Algy) to explain things to you.
Oh, by the way, you say the Hunter was "desperately slow at the top". Can you please tell me its IAS in the inverted position?