Hi Michael ...
This is pretty basic ... but I just discovered that I can have MoI opened twice on my dual monitor setup.
The Model on one monitor and the floor plan (architectural) on another and reference and copy back and forth.
I was originally a little disappointed that I could not place the UI on the second monitor and the model on the first one ... but this setup is great for my work. 2d and 3d all at the same time.
I really enjoy working with MoI and though I have multiple choices installed on my system MoI is clearly my favorite for almost all of my design work in the preliminary stages.
cheers,
eric