I think the subject description is wrong: it does seem to be a Weymann-type fabric saloon body rather than a panel saloon.
Bites back old joke about the joys of the open Rhode 
I've just had a quick glance in "Georgano" - he refers to this model (it was 1496cc Meadows-engined) and mentions the odd styling with the oval quarter-lights, but there is no indication that it was constructed on the Weymann principle, although it sure looks like one. I've always assumed they were relatively expensive to make when compared to all-steel panels, and therefore usually to be found on middle-market cars. I wouldn't call the Rhode a conveyance for the middle-classes.(With all due respect to Rhode owners reading this thread !)
I've just realised I misread the book - there were six cars made with the Meadows engine, and the remainder had the standard 1.25 litre motor.