My griff is almost 11 years old, my friend's griff is 14. Both are/were great all-round dogs. Very biddable, smart (in a hunting dog sort of way), athletic, great noses, strong swimmers, strong retrieves (upland or water), close working depending on game bird and type of cover.
I believe my female matured more quickly than my buddy's male. She was hunting effectively at 5 months...and at 17 months was into her second season and very strong.
Both dogs have been socialized a lot...and get along well with kids and adults. They do tend to be good watch dogs...and are protective of their territory.
Both dogs come from the same line, so it's hard for me to say conclusively how much of their personalities, behavior, style and hunting instincts are indicative of the breed vs indicative of the line. One negative...both dogs have had a tendency to roam if they get out of their kennels. (My English setter, on the other hand, almost never leaves the yard if left outside the kennel.)
The hard coat sheds burs more readily than finer-haired dogs. You may want to trim that "beard" as the dog matures...it holds a lot of drinking water and releases it on your best clothes at the most inopportune times! :lol:
I would not hesitate a moment to get another griffon from good hunting stock. My dog was very high energy for the first three-four years, though, and couldn't be left in the house unattended. Around four, over a period of a couple of months that completely changed, and she became very quiet and relaxed in the house.
Sure hope you have as much success with your pup as I've had with mine!
Best of luck