@tooki:
My post was not an answer to your post and your hybrid pianos. That was my thoughts to the OP! Look at the context of my post. I didn't speak to, or criticize you.
I've explicitly pointed out that others who do not make these keyboards themselves use mostly those from Fatar. At Clavia Nord electro, Hammond (SKx), both "waterfall" style keyboards, I assume that all are fatar keyboards inside. But I also like to be convinced of the opposite, if that isn't true. Depending on their needs, Fatar produces no-hammer keyboards, middle-weighted (Clavia Nord stage), and weighted keyboards with (heavy, "Fatar Grand Touch" >35kg), or without internal wood clappers.
Whether a manufacturer of stage pianos actually uses custom, fully weighted keyboards in their respective models, is a matter of their intended use, price, and, most importantly, weight.