Yes, this is why I'd suggest that the shape is nothing to do with the name. Because that would be a guitar not a zouk if the shape was the criteria.

You have to be very careful with Tom Buchanan's terminology. The names he gives his instruments should not be taken at face value. I've taken him to task about this, but he explains (quite reasonably) that he can make two instruments and sell six this way - though he really should stop using the terms 'octave mandola' and 'tenor mandola' IMO because both are open to horrendous misunderstanding (for neither technically exists and those words can mean mandocello, octave mandolin and/or mandola to different people)

His 500mm instrument can be strung as a cittern, an OM or a mandola - though I'd only ever tune mine as a mandola because it's too short for the others - or would I? Hmm. Maybe that could be an octave strung OM/M? Now - what string gauges would that entail, I wonder?