I love this forum - not only do you usually get the answer to the most obscure questions, but a whole lot of incidental information.
I'm not a pilot and thus didn't think the issue through automatically, but I
am an engineer and I should have realised at once. Rotating the donk the other way, especially one as powerful as the Griffon, would really make your eyes water in the wrong circumstances. It would fly very differently.
Thanks again guys.
Roger.