I always wrap them with the housing exiting just above the point where the drops begin the upward curve. A good thing to consider is that for every inch of housing, there is a higher possibility for the inner cable to drag. In addition, the more turns your cable housing makes, it also increases drag on the inner cable. Personally, I have never found a way to route the housing past the brake lever, where it's not pressing on my hand painfully in the drops(on either side). The path of least resistance works for me, literally.,,,,BD