I hunted there in 1981, 1984 and 2012. The place hasn't changed a bit in the span of 31 years (the mountains are a little taller). You can still drink right out of every creek and spring with no fear of getting sick.
It's not the easiest hunt in the world but it IS do-able for almost anyone and you'll see some great sheep and possibly some great caribou too.
We saw sheep, caribou, grizzly, wolverine, wolves in 11 days of backpacking. It's still one of the best high-adventure trips in the world!
I would say that way more than a dozen of my friends have hunted with them.
Zeke