Actually, I don't know that he's good with minis but he is super sweet and calm and gets along pretty good with most horses. I think he'd be fine but like you said, Endiku, the only thing we can do is try. I really think it'll be OK because of the sweet nature of the QH and because these minis are a little bigger then a lot of minis you see these days and they have lived with a Tennessee Walker in a small corral that was as jealous as all get out and would run them off before. The QH is a gelding not a stallion. They will definitely be supervised when they are first turned out together.