This sample has the same needle set up but on the back bed the pushers are put out of work and the lock is set on N. Then every 50 rows, you do N/N on both beds while still racking and then change back to the N/KX. It turned out very pretty especially for a scarf until I turned the fabric over. It is plain on the back.(DUH! no pushers) So I think a use for this might be a pillow.
Here is a picture of a scarf done in the first sample of Vertical Ripple in a solid color. If you wanted to add a little more color you could latch tool up the ladders with a different color of yarn.