I have never personally ran that software package, but I observed someone else working with it. I remember being a little shocked that much of it was powered by Lisp routines rather than .net or an equivalent. This leads me to believe that it leans on AutoCAD and not the various verticals we run. So, I would say the odds are good that it does run with Fabrication given proper configuration.

Assuming you already have a licenses of both Fabrication and the Trimble software, then I would recommend you make them demonstrate its functionality on your equipment by giving them control via Gotomeeting (or something similar). This will prove it works and make sure it is properly configured from the start.