I bought a spare board for an Epson PX-8 that is supposed to have tactile Cherry (Hirose?) M8.
As far as i can tell, it does (the tactile bump is not very pronounced tho... feels almost like something between linear ant tactile to me). On the top row there are some special function keys with what seems to be another M8 variant (?):
While the normal ones have white sliders these have black sliders. They also has a removable cap on top. The switch is tactile (i think ), too, but differs in travel length: it is much shorter then the other M8s on the board.
Has somebody further info on this?