I'd never herd (

This article in the East Valley Tribune (including map and video) http://www.eastvalleytribune.com/story/99037 explains a bit about it.
It says that the entire drive from the White Mountains to Queen Creek happens on public lands, which makes me wonder ... is there a hike to be made from the Sheep driveway? By it's very nature, it must have frequent enough sources of water to keep the sheep hydrated, which might also bode well for what would likely be many days of hiking over what I'm guessing is 150+ miles.
Are there any existing trails that parallel the Sheep Driveway (besides Canyon Creek)? Have HAZ members encountered other signs indicating it? Anybody have more info on the history of the drive?
(For the record, the Sheep Bridge along the Verde River north of Horseshoe Lake is NOT part of the Heber-Reno Sheep Driveway. I also believe that Sheep's Crossing in the White Mountains is unrelated. Though I'm willing to be corrected.)