You may have something there Bo.
I copied and have sat studying that pic at a much greater resolution. A few things come to light.
To my eye the cabanes now look like those of a Hannover, I know they did a twin seater fighter but cant find a decent image to check.
The cocking mechanisms for the guns, really unusual, as are the reinforced covers
The cowlings are piano hinged along the outer edge, which means the side panels may well be metal too.
The ammo feeds are not Fokker style either in fact theres nothing really Fokkerish about it than the panel fasteners when you look close.
Your point on the V.27... My only image shows it with a 4 into one exhaust system I have more images of the V.37 which was an armoured version apparently.
IMHO I think it's likely we are likely looking at a different manufacturer and possibly something in development that never saw service. Though it bears a passing resemblance to a Fokker F.IV in some respects
Still puzzled Keith
