Good news as since posted the question took the plunge and recently bought a Faderport 16 and have it running well alongside StudioLive 32 which I use in DAW mode. So of course fader movements, mute, solo etc are all replicated
Tested the foot pedal functionality earlier today (linked to the Faderport 16 of course) and seem to work as expected. Haven't had any issues so far although I do see a bug on the mute icons lighting up in Studio One 5. However will test on a separate system as expect that an issue with the new DAW software, and nothing to do with the hardware. Tracks are muted as expected, but not always shown in the arrange window view as expected.
Incidentally I also hooked up my Korg Nanokontrol Studio and using the jog wheel on that too at the same time. Linked up using the Mackie Control. Will probably sell the Korg as it's not that stable over Bluetooth, but it all seems possible