Wrong in a sence!!!You will not have the cool sliders but if you make a locator and parent it to the wrist joint you than can add attributes to the locator like index curl/fist ect.

Once you use the set driven key to make the movements, you will have the index curl attribute in the channel box. If you select the index curl, then click the middle mouse botton move it left to right, the curl would work kinda like the blend shape sliders.

Kurt