I love that term. Seems to me it was invented by someone who had never used a manual feed
chipper and needed to justify paying more than he had to for occasional use.
As one who has owned and used manual feed chippers for 25 years as an "occasional use" homeowner, unless you're made of money, I strongly suggest you pass on this needless option and spend your money someplace more worthwhile.
Power feed make sense for those who do a lot of chipping. But not for the typical property owner with occasional need for a
chipper.