No exceptions
It mostly stems to me being a sports shooter myself and competing in practical shooting (IPSC is a good reference). It's just the fact that a decent shooter is more effective with 1 gun in two hands than one gun in each hand. And that's why I don't like it.
But even if it wasn't for that, I have honestly never seen dual wielding pistols look good. Not even in left4dead. I rewatched the video too and the idle animation of "arms straight pointing two weapons" looks fucking horrible, this is what I hate the most about it.