Hey everyone, just wanted to give an update. Not many people have shown much interest in the goose, yet.
He's running with my flock of ducks still, and things seem to be pretty good

I'm letting them out together during the day, and keeping the goose fenced off in a corner of the duck house at night. He is relatively gentle with the ducks, but I'd hate for him to feel crossed in the pitch black of night... I think he could seriously injure a duck whether intentional or not.
He is testing his boundaries with me, though. Yesterday, he nipped me pretty good on the thigh; neck snaked, wings out, some hissing. Granted, I was messing with a pile of grass clippings that I just set down for him. Either way, I thought this is no good, so I pinned him for a while and said "no, no, no, never again." Luckily he submitted pretty quick, and when I let go he lay there in that exact position, very still, with his neck parallel to the ground. I actually had to give him a push, and off he ran in the opposite direction. It seemed to work. Hopefully I don't have to assert my dominance every day like that, it's really unnatural for me and I felt bad afterwards. I know this is good for him (I think :/ ), but it still is not fun for me.
Other than that minor incident, he's still a very good goose and is acting like a guardian to my ducks. I enjoy him very much. It's really cute when he corrals them if there's something threatening near by. Everything is good for the most part, but I can tell that in a sea of ducks this goose is still a little bit lonely.