Gunner's been part of our family for a few days now and we can now say with some degree of certainty that he's a perfect fit. He sits intently while Bella "reads" him books and the only time he barks is when he wants attention. He has an expert "sit" and is nothing but sweetness. He even follows Bella to the potty where he sits and cries for her to pick him up (if you've seen how she holds him, you'd be convinced the dog isn't very smart).
Both this morning and this afternoon Gunner went to the door (and immediately started to squat) to go potty. I ran and, fortunately, got there in time to take him out. I know he still has a looooong way to go, but it's nice to see he's catching on. Bella likes to take books out there to read while we wait for him.
We're still working on how to play together. For now, we play chase and he rolls around on his back. We're making progress on playing tug-of-war. We can't wait until he's old enough to teach him tricks and more games.