i'm not a huge alice in chains fan but i do like some of their stuff, and i gotta say those vocals do sound pretty much their style. if anything the actual instrumentation doesn't sound very much their style since the whole song just feels too happy and not gritty and dirty enough. it has kinda that vibe, but it just doesn't feel the same as what i'm used to (which is facelift and dirt, nothing else). to me the vocals sound perfectly like the droning vocal aspect they had, but doesn't have any of the variation in when he'd get into screams and other styles. so overall the song doesn't feel that right/as gritty and the vocals are basically the droning style but don't capture the full essence of everything else he had.
dirt and facelift will always be fucking awesome in my book, but i have pretty much no interest in any of their new stuff. i just highly doubt that they can capture what those 2 albums were and it'd feel like AiC but watered down a bit and that song didn't help my perception anymore. i would like to see them live though if doing the old songs that guy can attain some of the style when he has the chance to. heroin and opiates are fucking bitches and it's a shame how much their abuse fucks people up.