It's still a very young breed, so like a box of chocolates, it's a crap shoot what you're going to get. There are some that are nothing more than a happy go lucky golden retriever that loves everyone and everything and to the other extreme- what we had, a dog with an extremely sharp temperament, genuinely a menace to society, and of course anything between the two extremes, including complete nerve bags.
We had a female that had a great working balanced temperament, could do it all, anything you asked for, she was game. A great dog, an easy dog, a fun dog. Training KNPV with her was great.
We did a dog cognition test on our male, scored right up there with Border Collie on intelligence and cooperation, however, one part of this test was a tell. On cooperation and taking directions, there were two cups, and you let the dog see under which cup you put the treat, and then you point to the other cup. He followed my cues and directions until this point, but he knew I was wrong and he knew better. He would always choose his own path if he believed that he knew better.
He had a sibling with the same temperament, that boy was returned to the breeder after biting the owner's face, I think he was 10 or 11 months at the time. He was inevitably PTS because no trainer can fix a sharp temperament that will bite at the drop of a hat, and no one could handle him. I lost count of how many bones I had broken and how many times my dog bit me. He mauled a family member. If he decided you were a threat, you were marked for death and that's terrifying with an animal his size with the ability to crush your skull in his jaws. He tried to rip the leg off one of our employees when they walked into our shop because someone forgot to lock the shop door. He was a dog that would die to protect me, a dog that could turn off pain receptors and chew through metal and run though broken glass to do so. Most normal people would have chosen euthanasia, we chose to move to a remote island instead, to remove him from a world he wasn't meant for. We had 11 years with our big oaf. I don't regret anything, but would not do it again and would not recommend the breed, generally speaking.