Sweeping is a cool technique that can be applied to almost any style of music. One of my favorite uses of sweeping is in the song "CAFO" by Animals As Leaders because it's primarily used as a psychedelic effect. In a electronic song I am working on does something similar to a "sweep". Just use sweeping when it feel necessary, working outside of rock/metal/jazz can introduce different perspectives using your tools.
To answer your question: sweeping may not be that important at all, or be the vital of it. It is a personal decision.
