Metal without vocals?

Are these guys any good? I have been curious.

They're not bad. I don't quite know how else to describe them, the guitar riffs are pretty expressive and lyrical in their own way, and at times it sounds more rock-ish than metal. Don't expect blast beats or crunchy br00tal guitar.
 
think isis sans vocals

bit derivative, but alright. I'd recommend Isis or Neurosis over them if you didn't mind some vox.