ok, lets see, I don't understand how you figure that the plastic and paper inlays are not solid, or even how you can't call them inlays.
an inlay, is just that, it is a material, inlayed into another material. *Regardless of substrate, or size or thickness, if it is inlayed, it is inlayed. *If it is only a piece of paper, .003" thick, if you route a fretboard .003" thick, and glue that paper in, it is an inlay, if you glue it on top then you are just glueing it on top. *So, then, the inlays on the jems, are viable inlays, never mind the fact that they are placed under a piece of plastic that is approximately .0625" thick. *so, I would say that it is a real inlay. *
Also, as for the jem 10's, or whatever, yeah, they are real inlays, but not because of the material, only because like the "paper" ones, they are inlayed. *Wanna know a secret, the majority of the JEM7VWH and UV777BK inlay is plastic, there is very little shell in those inlays. *But they are still inlays. *The majority of guitars have plastic inlays, there are many plastics out there now that you have a really hard time distinguishing between plastic and shell. *Plastic is easier to work with, looks just as convincing, and unlike abalone, is not toxic to cut with a jewellers saw.
Anyway, inlays are inlays, that's all she wrote