I actually sailed the RRD AirFree in Italy last month. My face shows how cold it was....
6 to 10knts with an 8.2, not the ideal conditions, but planning with the swells. Roberto was out phanging around in 16-20knts further down the coast the next day,when
we were leaving!
You can see the moulded release rails back from the wide-point.
They do feel different of course, but that feel soon becomes the norm. With all the focus, and technology, it wont be long before there will be an acceptable alternative
to the normal construction methods.