On the gondola to the top of Sulpher Mountain, my wife and I rode to the top with a local who worked in the souvenir shop. Her description of Grizzly Paw was to my point: only tourists who don't know better go there—locals never do.
We had lunch there right when it opened before heading out to check out the natural scenery—it has sort of a Hooters/sports bar feel: under dressed waitresses, big patio, and everything is shiny. Didn't see the brewery. I had a veggie burger that sounded great, but was very bad. My wife's food was ok, but we never returned in spite of being in town for five days.
The beer isn't worth the trip either. The Brewing Badger Light was the worst, no surprise in a pub line up, but this was nearly undrinkable. The rest were very hard to tell apart, similarly bad with little distinction between the light beers. The best of the lot was the draft Root Beer that my wife ordered. Never got past the samples to have a pint of anything else.
It's the only brewpub in town, so stop if you have to. I did.