Duncan actually sells that "top". The tetrahedron is the first in the Tetra Tops series. I have a set of the originals before Duncan bought the rights from the "inventor."
I never though of a tetratop as a tippe top. There is some similarity in that it wants to spin with the center of mass as high as possible, but to me it is much less surprising.
Thanks for the video: the balls of my tetrahedron unglued after a fall and I have not been able to superglue them together (after seeing it, I guess I need much more glue, probably of the two component type).