BARELY HUMAN Seeing two people on stage with a mic in hand and a band behind them would probably make me leave the room instantly. Howevver I'm all for exceptions to a rule.
Not a fan of gang vocals, but it works for some bands. I immediately have images of youth crew and/or metalcore bands screaming platitudes about being 'fake' or a 'backstabber' in my mind. I'm above that shit, rose above it.
Sounding tough ain't the same as being tough. Just ask Iron Mike: