I got these on a super deal during the 21 days of the TdF sale. The spokes are attached directly to the carbon, i.e. it's not simply a plastic fairing. Spoke nipples are recessed, and you will need an internal spoke wrench (not included) to true them. Handling is very predictable and solid. I've had zero problems in cross winds. I've done a number of races on these wheels and am very confident pushing them hard through corners. Aero benefit seems to come in around 22-23 mph.
Spoke tension is extremely high and even, especially in the rear wheel. My only complaint is that it is seems the wheels weren't completely stress relieved at the factory. The first ride I was greeted with "ping, ping, ping" and slightly out of true wheels. To be fair, since that initial episode, the wheels haven't moved at all in a couple thousand miles.
Just an update after another couple thousand miles. I found that after riding in the rain it's possible to collect a substantial amount of water in these wheels. After riding in the rain, it's sometimes necessary to remove the tire and tube to drain the water out of them.