I am curious as to one thing, both in the TDF and more recently the Pro Challenge, why A/S team isn't using the AR more? Even on sprinter stages the guys use the F over AR. I have no reason to doubt SuperDave's info, and I'm sure there is a good reason, but I keep asking myself why the pros don't use the AR. This is especially curious because everything we have been told about the AR says that it has bridged the compromise between aero and traditional road frames.
This isn't just an A/S team choice though, I did not see any S5s on the Pro Challenge, but since we have Dave's ear maybe he could enlighten us.
The Argos guys are racing on F-series bikes because that is what we provided this sprinter-focused team. Almost all the riders are using the low aggressive F-series bikes with PRO -10 degree stems with no or a 5mm headset spacer. A few guys are on -17 degree custom stems on an F-series bike. As the highest STW of any other bike we offer, the F FRD was the perfect choice.
The new AR bicycles haven't begun mass production in the AR FRD format just yet, delivering all new bicycles above and beyond the contractual obligations in September doesn't seem like a wise investment. With a few dozen wins including bookending the Tour de France with victories over Cav, the gorilla, and Sagan, I think their equipment choice is far from limiting.