I thought we were talking Ezebilt. Covering balsa with cloth and other preparations is not Eze. It's a royal faff. Much easier to just use a decent material in the first place like plywood.
I have foam aircraft that are immensely stiff and light. Far more so than balsa, although without that rather crude packing tape they get dented like balsa, but are far less brittle so take crashes more easily. But we were talking about what's easy to build for beginners and no kind of coating is as easy as a basic kit, but that model will break sooner rather than later. Doped tissue might work fairly easily as will cellulose sanding sealer. But that's still a faff and sanding sealer has become a very considerable cost.
Doug, when you mentioned FG, I understood it to be light cloth or tissue, but it needs to be soaked with another coating to make it useful. More faff. I have no experience of Ezekote although I have heard of it.
I covered my mahogany strip planked cutter
in epoxy coated cloth, but it took a LOT of rubbing down. But a large heavy boat requires a certain toughness. My other boats are not covered in anything but paint, though they are epoxied internally to allow for water protection. made of plywood and squeegeed with epoxy (no cloth) they are then painted. My old boats of course, are just paint and have never leaked a drip in nearly 60 years, so I am still not convinced by this fashion for encapsulating everything. I fear it might be a cover for poor craftsmanship. I say that as IU rushed the cutter
and there were indeed a few gaps, but I am not able to spend the time I used to on projects. If I want an end result I sometimes cheat to save a lot of time. I wanted a model of the boat I'd lived ion, not an exercise in yachtbuilding so I banged the strips on and then covered it. It is now like a rock of course and utterly waterproof for ever.