I've been freelancing at a facility that "partitioned" part of their Unity for their new FCP systems. They are still running two Avids on the Unity. (I don't know how...so please don't ask)
The biggest PITA that I've found so far with this set up is every time I flip out of FCP to go to Photoshop or Motion or any other app, when I come back to FCP, it has lost contact with my render files.
Every time.
The render files are not gone and nothing needs to be re-rendered, but the only solution I have found (so far) is to quit FCP and relanch. When the project reloads, the render files are right where I left them.
It's a huge time-suck if you go between apps on the same computer.
debe