Thanks, Mr Boffin.
Engines - Interesting note on the roll posts - I'm not sure that has been out before (and checking, it was not in a quite detailed brief from early 2009).
Haraka - Of course it's not a Yak-141 Freestyle knock-off. I mean, the 141 could not do a VL demo at Farnborough without damaging the runway
. Conversely, one also remembers when lift-plus-lift/cruise was dismissed as old hat, and doubtless far heavier than the bold new shaft-drive technology.