I'm not sure if it's a marketing gimmick so much as just a development of the line. It's only a couple years old, so they're still coming out with new ideas. I've not had the chance to try a Cain F Nub yet, but from what I've read it's the best of both the Nub and Cain world. Yes, I'm biased because I love both lines, but I never viewed this as a marketing ploy so much as the evolution of the Cain/Nub lines
