I don't know exactly how the pros would do it but I would personally draw the shape of the handle bars with the curve tool (front view or side view). Then I would display the CV's (display menu). Then goto CV selection mode and start adjusting the CV's in the other view. Then, make a circle the same diameter as the handle bars and extrude it on the curve.
Don't be satisfied with what you can do but rather strive to do the things you can't do!
Exceed Expectations!