He's also not particularly mother friendly, at least based on the way he writes them for the companions.

The big question with Torchwood is exactly how much imput he had on the episodes he didn't write. Greeks was written by Toby Whithouse, who also wrote School Reunion for Dr. Who. I love that episode (Anthony Head!) but the whole bitch-fight aspect of the Rose/Sarah Jane relationship is less than pleasant to sit through.