In this case it will work too, as you could use the accessory port 1 to enable spool and keep your accessory 2 connected to a midiizer or an ats100. As long as you don't operate both at the same time, but they can coexist and remain connected. I wonder how taspunch worked for the SMPTE sync. Was it also needed to connect track 8 to the computer ?
The built in auto punch in has a resolution of 1 second which is pretty low, I could get to 1/12th of a second, not sure if that will be good enough