I think it sucks. All but one of my channels are stuck with that shit. But for some odd reason, one of my channels ( http://youtube.com/zelsuka1223 ) stayed with the old layout. So + for me. But fu*k the new layout.
you won't even notice it in a few days, just like every time youtube makes another pointless update. I think they roll it out progressively because mine has had that layout for a good month or two.
Honestly, I absolutely love this layout compared to the old one. My only issue is the redesign on the homepage and I barely even use it so I couldn't give a crap.