Chromatose
Squid pro quo
Yup, their earlier releases anyway could fit, not so much the latter, though either way they're totally a rockin' band. Anyway, I believe Sludge though originally had a big 'core influence? So slow and heavy is only part of it, but regardless, genres are marketing gimmicks so I don't delve into such frivolity.
Sludge can still be used as a style descriptive as it was in this case, than genre nomenclature, so that's where the fun comes in, see: Heaviness Thread
Sludge can still be used as a style descriptive as it was in this case, than genre nomenclature, so that's where the fun comes in, see: Heaviness Thread