Today, I attended a presentation at on how Cannistraro, a mechanical contracting firm, does coordination.
For many of their projects, they model and coordinate using AutoCAD MEP and then clash in NavisWorks, to see if they missed any issues - sounds familiar.
One of the interesting things that the presenter brought up is how they convey the information to their pre-fab shop. I've heard rumors that other MEP subs export a BIM to CNC for automatic fabrication. However, at Cannistraro, the information is communicated to the pre-fab shop the same way Tocci's VC group communicates most information to the field: 2D documents that shown dimensioned 2D & 3D views of the model.