I have not but I would recommend you talking to Larry at Premier Hunting. His link is on the sponsor page on HPA. He is a straight shooter from PA and now lives in CO. Even if he didn't hear about your outfitter, he can talk about the area you are planning.
CBB, we actually just contacted Cherokee about a hunt for next fall. From what he told me is that all hunters this year had "opportunities" at elk, but not all connected. We are still up in the air about where we want to go.
I don't know anything about the outfitter you mentioned, but like others have mentioned give Larry @ Premier Hunting Adventures a call. I hunted with Larry in CO this year with an outfitter that I have been hunting with since 2009, Larry will be booking hunts for him in the future as well as the other outfitters he already books for.
Larry is a good guy, I would definitely use his services if I was looking for a hunt. he also lives in the area of the outfitter you mentioned.