IB,
I've hunted sheep on the Esclante, I had a tag in 2001. It is my my most memorable / rewarding hunt experience.
Randy Johnson / High Desert Wildsheep guides is your man. Randy specializes on the Esclante and as far as I know has spent more time on the unit than anybody else.
It's a scenic and can be brutal unit, It's backpack only! Water is hard to find and traversing the sandstone mazes can be impossible with out an experienced guide.
I highly recomend Randy, PM me if you need his #.
Claude Archuleta