I never wrapped mine and never really had a problem racing duathlons. Eighty percent of your weight should be on the saddle, the weight in the front is mostly on the forearm pads and the hands are more for guiding.

A buddy of mine just gave me his extra pair of Syntace clip-ons and he had just a section wrapped, where the hands fall on the bar, maybe about 5 inches. Black tape secured both ends. I'll take a pic of it when I get home...