I knew a chap who thought he saw M0.9, but everything was shaking itself to pieces and he lost his tailplane before he could grab the "blind". (Mk 1 seat). His chute deployed so low that he broke his back. But the Bedouin took great care of him and he lived to fly again. (And die in a later Javelin prang, I believe!). No way could a Meatbox go supersonic and survive.