I am not personally familiar with this breeder and don't think I've met any of their dogs (not a surprise since they're on the other side of the country). Most of what's on the website looks good to me, although I do have to admit chuckling a little at the breeder calling a judge a "jerk" for DQ'ing her.
I can verify that several Hinterland dogs are or have been active in multiple AKC venues and seem to be doing fine there.
I know that's not much, but at any rate I think it's not a bad idea to go look at the dogs in person.
ARCHMX TDCH Pongu the Insane, CD-C, RE, RL1X6, RL2X5, RL3X2 (GSD mix, b. Apr 2010)
Crookytail the Tigerwuff, RL1, ITD (Akita mix, b. Jan 2011)