This isn't anything new. I've been planting back next years bud attached to 2-3 year scars for many, many years. I also remember watching a demonstration by John Epler in the mid 90s showing the same method of propagation. The first season the plant will be quite smal with very little root growth, but the following year they really take off. Great way to harvest a root and still allow the plant to survive. I have yet to here a buyer complain. I don't take enough of the neck to really effect over all length much.