They look great and are price competative with other integrated carbon fiber bar/stem combos. I imagine quality would be equal to or better than that of existing combos, and you are able to specify which handlebar to use and at which angle it is attached to the stem.
However, for me, the options of either a +10 or -10 degree stem doesn't quite work; I would prefer a 0 degree or -5 degree stem option. Also, it rules out clamp on aero bars for the occasional time trial.