Originally Posted by
Engineer
Just to emphasize a couple of points already mentioned for the drop-down version. They do limit your hand positions, they are designed so that you are on the hoods, and you can put your hands where the bar curves up to the top bar, but you cannot use the drops safely.
I find I can use the drops with no problems with my hands outside the mitts. Shifting (brifters) would be nearly impossible, but braking is fine.