Gryffon is totally perfect, and exactly what I wanted. I had wanted a dog that was more on the friendly side than the aloof side, and he is. To my way of thinking, a dog can't be too friendly. I can get him to ignore people and focus on me without any problems, but will also be a super friendly dog when allowed to interact with strangers and friends alike.
He alert barks, but is quiet in general. Great with my cats, responsive and naturally self controlled. The biggest challenge I faced when looking to get another dog, was finding one whose personality would mesh with Keeta's: I needed a confident, strong dog with natural aggression and a never-die attitude for Schutzhund, but one that was mellow enough and easy-going enough that he would not be bothered by Keeta's bullying or pushy behaviour - dang if that is not exactly what I got. He is strong enough in protection work that advance trainers/competitors were impressed with what they saw in him, but in the house he defers to Keeta and is happy to allow her to be top dog, but can stand up to her if she tries to bully him around or push him around too much.
He doesn't care much for other dogs, and having a dog that plays with unknown dogs is not a priority to me. He tends to put on alpha airs when around other dogs, but one word from me, and he is under control. For example, the other day I was talking to some neighbours, and their dogs were getting growly and getting into Gryffon's face (I was in their driveway). Gryff was off leash, and was getting growly back at them. I immediately platzed him, and he hit the ground, and focused on me for the rest of the conversation, not even looking at the other dogs. When we walked on, he just got up really happy and sauntered on like nothing happened, still ignoring the other dogs.
What can I say, he's just perfect.