The point is that it is not new that they are trying to use inflated rig on an A class. I think it was around 1988 that a Swiss guy was experimenting with it and he did go fast with it ( i will try to find the photo of that boat ) but the rigging and de-rigging was a problem and also the weight (at that moment the carbon was not yet common) . On what was written down the up wind performance was very good but very difficult ( critical in adjusting ), the down wind was even more difficult.
But it looks very nice, i cannot wait to see Ben sailing with it on the Worlds in Florida.