Pretty pumped...
Sure, the new album might be their worst. But it still has 4-5 really excellent songs on it. And that won't affect their live show much at all, since they'll most likely only play the good ones and B + S have never been ones to throw their whole new record at an audience. They like to give the people what they want.
Plus, these guys've already released a normal career's-worth of good output and Stuart has near-infinite charm.