Thanks: yes, but washout from propeller wind acts on wing, while Ducted fans inside a lifting body or fuselage will not, this is the difference I'm in doubt about. Another concept that seems interesting is 'Trompe' (see Wikipedia) a turbojet inside a duct sending by drag larger mass, lower speed air column. Salut +Ducted fans are similar in principle to propellers, except with more drag.
The issue with pylon mounted engines in amphibian machines, they say, is that engine problems, from momentum and couple of its high position, could send airplane nose down to the depths of water, it seems this arrangement sent '5 Feet Under' several pilots. Electric engines are lighter, sure. Salut +
With the price of a gopro mounted on a gyroscopic stand, do you still consider the view at landing as an issue?