The vocals are flat. But it is not too bad, a little different from the original, interesting spin, but please work on your vocals. Get auto tune if you have to.
Interesting cover. Sometime I felt like it was another song. Often. Unatural vocals (mostly because of the low pitch, and the second vocal track which is way too low).
If you watch the lamentations doc, you actually hear Steven talk about using it on Mikes voice, and I can bet it's used on pretty much all of their CD's somewhere. It's common, very, very common.