Just look at George Fisher. Dude sounds like he has a cold all the time.

I really wouldn't be surprised to find some former vocalist of a **** death band go on to make use of Tom Waits-esque gravely voice in the alternative music scene.

Well, I kinda would, but it'd be an amusing novelty though.

if we are going by wikipedia this is what says about SOAD
Alternative metal, progressive rock, hard rock, experimental
Like i said they have some elements from nu-metal but they are as far from nu-metal as someone like Pantera and Rammstein are.

But then again, Pantera started playing before the nu metal movement officially started, and long before it got popular. Rammstein's Wikipedia article says they're Neue Deutsche Härte and industrial metal, and both their last.fm and allmusic profile testify, so I guess I'll stick to that.
I guess we shouldn't follow the nu metal list blindly, either, as Marilyn Manson, Sum 41 and Rage Against the Machine is on it, too. Wikipedia isn't known to be reliable, and a lot of the bands on the list are there because they have one album, or even only one song with a nu metal touch.

That is a very good point. But SOAD is well known to have Nu Metal influences.

I think if you count those demos then you could definitely make a case for songs on their debut as well, or at least that's how it seemed to my young and untrained (still the case) genre ears.


System Of A Down - Soil #07 - YouTube

So i'd probably agree with Vanilla. I don't see it as a problem though, I don't see why people are worried if bands they like are/aren't included in a sub genre.