Both XFCE and Plasma

Is it possible to install both XFCE and Plasma and switch to either one at boot time?

Yes to install and no to boot time. Session type choice is made at the GUI login screen.

Yes! (I have both)

install the 2nd desktop using patterns in YaST

You can install not only two DE but more if you want.:wink:

Thank you. It works just fine.