Saw these for sale in person in Bangkok, thought they they were some sort of fake first. but they are on the Crazy homepage, designed by "kenmotsu" it says there..But otherwise it for sure looks like a generic Geotech head?

Yes open model head grinded by Kenmotsu... I saw them months ago, even snapped pics but as an open model head made the decision not to carry them in the shop and only have them by special request.

Each set is hand grinded by Kenmotsu using the base generic head.

Here's one of the pics I snapped for those who don't know this head shape.