I have been familiar with Wersi (On and off) for a good number of years, (As well as other manufactures boards) and I don’t know of any that you don’t just switch on and play.
In the 90s they went very Japanese by giving minimal real time control and multiple screens, but with the release of the OAS system they went back to there roots and produced keyboards that excelled at Real Time Live Play, with no need to access any other screen other than the Main Screen when playing a song. (Remember Wersi has been making Organs and Keyboards for well over 35 years, and they have been used by Artists in venues from small room’s right up to massive Stadiums, all over the world)
Enjoy whatever you play

Bill