Re: Chrome bad horsie copy?
Don't forget that bending the acrylic mirror over the curved armrest will require just a little more material. A template based on a flat tracing of the RG/JEM body might result in a mirror top that falls a little short on the armrest.
Also bear in mind that it took Ibanez at least a couple of years to put this product out, because they wanted to figure out how to prevent the mirrored backing from cracking and 'crazing' over the curved part of the body. Without that knowledge, you're probably not going to get the same quality results Ibanez did on the production model, but it'd look more like Steve's prototype.
Are you thinking of beveling the edges of the top, or binding it like Ibanez did?