Thanks Rudderrudderrat! It makes perfect sense
So turning into dead engine actually is dangerous on the highly-swept-winged aeroplanes with indifferent rudder and 5° bank into live was not just drag reducing measure as I was taught but necessity to get a certain aeroplane certified with low enough Vmca.
EDIT: That would be another myth busted:
Creatively interpreting the certification criteria to effectively bypass them is Toulouse specialty.