Carcassian
Utopian Blaster
V.V.V.V.V. said:You're on the right track, my friend...sludge is mainly based around feedback and heaviness, essentially. "Sloppy" also works as a good descriptive term for it. It's not always doomy, but yeah, generally that's a fine definition.
A case in point would be Iron Monkey - very doomy, but far too flung from the Sabbathian vibe to be a fully fledged doom act. They seem, to me, to be sludge, and yet (despite their band members having been in HC acts) they have few, if any HC influences.