The reason people call it a hawk pen knockoff is because they copied the internal drive system of the hawk pen so it is in a sense a knockoff. The hawk pen has a similar body structure to the stylus but different internal system so its not a knockoff. The hawkpens system is closest to the NedzPen that came out a while ago but it had issues and the hawk doesn't they have a great drive system that's why there are so many new "pens" that have come out now that Cheyenne has standardized a great design. If you don't buy. Hawk pen might as well buy a EZ Pen, they work well and don't pretend like they created anything special. The NATS pens look pretty cool, they have some with Maxon motors and those cost less then the proton. Its a shame these companies are up selling and so many suckers fall for it