Yes, it works:
Import media to media pool & ‘create multicam clip’
Select that multicam clip, right click and ‘open in timeline’
Select each layer and use transform to reposition each angle to get your multiviewer – e.g. Top Left for C1, Top Right for C2 etc
(You might want to modify the timecode of this timeline to match your main camera – I couldn’t see a way of doing it, other than copy pasting the multicam timeline clips into a new timeline with the correct starting timecode)
Go to the Color page and set your data burn-in options for the multiviewer – likely to be source timecode – and export
(I couldn’t see a way of getting BITC on each camera without exporting & reimporting)
Bonus: If you export at a decent resolution then you can import the multiviewer to Resolve, add it to the multicam timeline as an additional camera, and do your rough cut with that… much less demanding on resources than trying to play multiple angles simultaneously.