The thing's a turkey, and will never see the light of day! High subsonic cruise is difficult. Airflow will go supersonic in places above about M.92 resulting in vibration and fatigue. We used to take VC10s up to M.93 in training and there was signifiant vibration. It wasn't designed for those speeds, but the higher airflow speeds will still occur. Can you see what a mess a world full of jetty operators will make of those pretty foreplanes? The powerplant installation doesn't seem to be fully thought through. It doesn't look efficient or satisfactory. The area ruled fuselage will be expensive to manufacture. In short, a highly expensive, inefficient machine operating in a high drag transonic speed area and nobody wants to talk about it!