I've had them since '99 and raised a couple litters. One is snoozing under my chair as I write this. I love the breed but each pup is an individual and hard to generalize personality. Very intelligent, all that I've known have had a very strong hunting/pointing instinct. From my own experience they are not a good breed to kennel or tie out, they want/need to be with their people. There are two schools of Griffon breeding, one that adheres to the original Korthals developed breed, and a more recent linage crossed with the Cesky Fousek. They are all under the umbrella of "Wirehaired Pointing Griffon" and there's still a lot of friction between the two groups. Most people don't know or care however there may be a difference in how they act in the field. Best to look at the parents and see if their style matches your wants. My first Griff, from French Canadian bloodlines, conformed more to the original breed and was great in the thick stuff for ruftails and timberdoodles. She didn't do well on wild pheasants, she was too slow and deliberate in working out the scent trail and they'd run away before she could pin them down.
Great breed. I have another on order from a future litter.
I got mine on a lot of wild pheasant her first two years on a private ranch in ND. She is deliberate but learned that as soon as she hit a scent trail she would sprint a 100 or so yards ahead and attempt to head off the running roosters. I think if you get the dog, while young, on a lot of wild birds ( pheasant, huns, ducks, chukar, grouse, quail) they will figure it out if they have a good prey drive and genetics. She loves waterfowl hunting most of all it seems. Fun to watch the light bulb go off over their head. lol
I couldn't imagine kenneling one outside or leaving alone for long periods without a lot of exercise. They do seem to take a bit longer to house train maybe due to their stubbornness . Im a big fan