Everybody,
thanks for your input.

Balsa, so I guess they let them in the park? however Matterhorn Canyon is outside the park isn't it? In Hoover Wilderness?

Gaucho, do you have direct experience with Llamas in Argentina?

Fiddle - thanks, I don't live in grizzly country frtunately, but I'm wondering if sasquatch would hurt a Llama since they chase down deer and bear? Warm Springs Reservation is near here. One indian woman called the reservation police when she saw a bigfoot chasing a black bear. Later the police found the shredded body of a black bear.

Maybe sasquatch also don't recognise Llama scent and combined with human scent might stay away.

I'll remember the neckerchief thing. Perhaps one of the best parts of this idea - my wife loves to backpack, but refuses to carry a pack, a Llama could carry hers and mine at the same time, and it would lessen the load on my bad knee.
Jim