Hound is one of the team captains, the other being Marcus Brigstocke. While Brigstocke is polite, well-spoken and usually very funny, Hound has an annoying habit of attempting to use Argument By Volume and Argument From Length Of Rant as his two intellectual mainstays. And that's not bad, in its place, but it's place is not when Marcus Brigstocke is trying to say something which is probably cleverer or funnier than whatever Hound is shouting over it. I'm pretty sure I've seen Hound 'win' an episode simply by being the only person who got a word in.
What I'm getting at is that Hound Vs. Brigstocke would be a perfectly good setup if the show had a decent compere. It doesn't. Argumental is presented by John Sergeant, who is an accomplished political commentator but knows as much about compering a comedy panel show as he does about ballroom dancing: he can turn up and go through the motions as well as the next man, but it's not his strong point. He almost never intervenes in the debates -- in the first series I think it happened once, and that was to correct Hound about history.
If your compere isn't prepared to wade in, you need polite and respectful contestants, and if you have shouty, ranty contestants then you need a strong compere to rein them in. Hound and Sergeant are both returning in series two, so either Dave has not noticed that the setup isn't working as well as it could or else they're going to have a stern word with Sergeant and tell him he needs to stop Hound sometimes so other people can play.