I put four of the eight Zama boards on a table yesterday, and they joined up nicely. I've still not finished the flocking, but I've done enough to know that it'll all work. The boards are a little browner in real life than in the photo.
Yesterday I raided the local pound shop, and bought enough camping mats and doublesided tape to put a padded backing on each of the boards, as below. I'm hoping that this will protect the surface of the boards when they are stacked up against each other, and protect my table top, too. It only cost £1 GBP per board!