That is exactly what we have ended up doing. I have been assisting on a project where the editor was yet to start so I was frankly ‘over-worrying’ the details of the project.
I ended up syncing everything in timeline with the 2 video layers and 8 audio channels. I then went through linking the audio to camA & dragging into a bin. I then did the same linking the audio to camB. I then created a multiclip with these 2 new clips in the browser. This way no matter which angle the editor switched to it maintained the same audio.