Havoc has stated that it is "built on an extensible C++ plugin based architecture and we're shipping source for many of the plugins that will form part of Project Anarchy," so hopefully it won't be an impossible feat.
http://www.projectanarchy.com
Thank you 3DConnexion! I got so used to working with the spacenavigator in Maya that I simply can't go back to keyboard-mouse navigation in 3D apps