My belief as well. But I have decided to stop using integrated bars and stems. I cannot get them to not give me sore arms. Good round aluminum bars and stems are as light or lighter than carbon bars and stems. I have weighed them. Plus carbon bars can rotate in the stem This happened to me twice and I barely managed to not crash, so perhaps you might think of that. Also Hambini said that in fact, that round bars are probably more aero. Him being an aerodynamics engineer probably lends some credence to his opinions.