These are so cute. I was at the vets with my cats and there was a girl there with her beautiful black pet rabbit. He must have weighed 25 lbs. and she said he was a great pet and could jump up on the sofa and sit with her, followed her around and overall wasn't much trouble at all.
I've heard of people doing that before. Maybe not with one quite that big, but still house-training them and keeping them indoors.