I do pieced backs all sorts of ways. I do my own quilting on my DSM so I have no concerns about longarmer needs.
Sometimes I don't even need to piece a back but feel like doing something creative. I like to take a wide back and slash it apart in a random direction, piece in a strip of contrasting fabric, then slice into it in another direction and piece in a different fabric. Mostly random, except trying to avoid creating lots of seams coming together in the same spot. Then if I'm feeling especially creative I'll patch in those same contrasting fabrics into the binding, and line them all up so that the strips of fabric seem to wrap all the way around the binding. Kind of a pain because I end up doing the binding in pieces to make it all line up, but I like the result.
