Anaprop,
I think that it is possible to demonstrate the effects of asymmetric flight in an aircraft with the engines close together if the engines produce enough thrust. Even in the F4 Phantom (with engines embedded within the fuselage) if the pilot did not carry out the BOLDFACE to fly the aircraft the result was often disaster. Only due to having an ejection seat were more lives not lost.
The Phenom 100 is too under-powered for it's proposed use in the RAF for a number of reasons.
Once again the advice that was given by those aircrew at the "front line" was ignored by those at the top of Ascent and the Air Staff at HQ22 Gp.