I to would like the benefit of DAR's knowlage on this subject, I can't think of an electrical problem that will stop the engine ( now they have the FADEC back up battery fitted) due to the fact that all the essential systems are duplicated.
There are mechanical issues that would stop the engine with a single failure but no more so than with an AVGAS engine................. Well so much for the theory perhaps DAR can enlighten us with some real world wisdom.