Richard,
Has anyone used the StudioLIve Series III with SAWStudio as a record/mix USB interface? If so, how well does it work? (Is the PreSonus USB protocol compatible with SAW?)TIA
So, Richard, did you ever get a response to your original query?

As with many such postings, this posting went south.

Are you able to rent a StudioLIve Series III?

It might be helpful to note that most, if not all, of their USB devices use the same control software, called "Universal Control". I have used their "control software" with their USB audio interfaces along with SAC, and all worked well!

If you check the USB mixers - such as the StudioLIve Series III, these mixers use the same control software as the audio interfaces.

Hope this helps?