Soren turned out fine, didn't he? And he kept me from stabbing myself in the face from 3-7 years old. Lulu and Skwisgaar have him, and they're quite good with kids.
Miniver is of the impression that Skwisgaar and Lulu are a king and queen, and he seems to trust them both quite thoroughly. Skwisgaar won't let anything happen to him. The big guy might get loud, but he's not a violent man.
There's nothing to worry about. If you want to, I'm sure Lulu won't mind letting you check up on him if you want to.