Yeah, Chuck Billy and the dude afterwards were an absolute joke. I skipped the solo section, but otherwise it was not bad. I'm not a fan of the alternating vocals approach; at least stick to one vocalist per song. It felt like We're Stars, except on the wrong side of 1990.
It was nice to hear Jericho sing something cool for the first time in a decade, and this is the first time I've heard the new Arch Enemy vocalist sing, since she hasn't had that chance in Arch Enemy. There was nothing wrong with the rest of the vocalists, but it doesn't feel serious to me with so many different vocals.