Just a small Update.
I have my pinscape working now for some weeks. Re-wired some cable to the connectors, as the controller has a different wire scheme.
But the joy buttons can be assigned to other joy buttons (even keyboard presses), so that was easy.
As this controller has much more button input, I added a coin door switch as well, so when the door opens, the Vpinmame rom will detect that the door is open as well.
I must say that the plunger with the potentiometer is much better than the VirtuaPin controller.
And if now my controller fails to work, I can buy a KL25Z board and just put the firmware on it