I just installed Calligra according to http://userbase.kde.org/Calligra/Download#Ubuntu_2. The instructions ends by :«In order to run the installed packages you have to logout and choose "Project Neon" from the login screen. Neon always has the latest version, not necessarily the beta releases. »

Running Mint16 I indeed find a secondary windows associated with the connection windows, showing 4 choices : Last, launch the Xclient script, MATE, Project Neon
MATE (the name of my desktop manager) is selected, and I find no way to select another choice.....

Unless someone answers here, at https://launchpad.net/project-neon there's "Ask a question" link...