Serpentine layering is cool, it's pretty much a method of cloning, except the clones are still attached to the mother! All those new roots will be supplying that "branch" with lots of water and nutes, essentially it becomes new plant all together. I wonder if the authorities would still consider it one plant? I guess it depents on how large the layered branches grow. Very nice, I love experiments! This is actually something I've been thinking about trying for a few months now, except I want to try it indoors first...but since you're taking the bullet for me, I'll just watch your grow! Keep it interesting!