I've met some here, there's a kennel that breeds them in my city. My sister is thinking of one in the future.
They supposedly have no prey drive whatsoever, so they look like a northern breed, but don't really act as one. And they don't bark, apparently.
I've read that they can perform as sled dogs, but I've also read that they shouldn't be subjected to that sort of 'work.'
I think they were bred strictly to be pets, to be family or companion dogs.
I don't really see the advantages of them over a Keeshond, and they can look kinda similar. I'd rather get a Kees...