[ F21 GNOME ] How to properly install Xfce

Hi all, A while back I installed the main Fedora flavour to peek out how GNOME was doing but I want now to go back to Xfce. Alas! From what I've been researching removing GNOME Desktop is close to impossible without risking a massive wreak-havoc. OTOH I'm not going reinstall the whole stuff as I already have the system up and running the way I like it :P Until I figure out what to do with the GNOME Desktop leftovers, what would you say would be the best way to install Xfce Desktop, just issue an 'yum groupinstall "Xfce Desktop"'? I won't be knocking wood, crossing my fingers and rubbing a rabbit leg through the process :S Btw, thanks a lot for your work on the upcoming lil rat release! Regards, -Martin