We were part of the TA group that went out to Toroweap. I echo everything Ohio Hick had to say.
If you have a 4 by 4 high clearance vehicle-- it is SO worth your while to visit this area of the Grand Canyon. No crowds- no facilities- just nature. Definitely go prepared in case of a flat tire.
Not all were as leery of the height as OH (as my one photo will attest) NOT something I would be comfortable in doing but we had a "mountain goat" in our midst :)
Wonderful experience and something all should do who love the canyon.