discussion of R-Sys on these pages is always fraught with emotion and opinion, so I'll not contribute anything that hasn't already been discussed. Here's a link to the last time I wrote anything substantial. My comments are on page 5: viewtopic.php?f=113&t=115470
(forgive my primitive effort at redirecting to a prior WW thread topic).
Tinea regarding the aero test protocol, I don't know anything other than the info I saw was wheels tested in a bike, particularly at low yaw. believe it or not, at low yaw the wheels stir up the air enough such that the bike+ R-Sys wheels combo can register lower drag than the bike + aero wheels from other brands. This test was made over 4 years ago in conjunction with a racing team. It's small effect but was detected and presented to journalists at press function. However when factoring "watts to spin" I wager that any reduction in drag is negated. And, outside of a narrow band of yaw angles the drag reduction probably disappears.
All that being said, aerodynamics were not considered in the wheel's construction, and I don't think Mavic would claim any aero benefit. As discussed in my comments on the thread linked above, the primary design considerations were ride quality, stiffness, and light weight.
thanks as always for your interest in Mavic, and your kind consideration of my comments- zack