Again, all you say is true Wally and for all non-centreline thrust twins, however, I think the Jabiru is a pretty cool solution because:
a) it's started life as a single, so SE climb rate isn't going to be terrible (relatively)
and b) the thrust axes are quite close together compared with most twins, so Vmca is going to be relatively low by comparison.
One would presume that a twin-rating will be needed to fly them still, unlike (I believe) the similar-in-concept Cri Cri.