u/JustLovelyLittleMe

Update, I just bought the Epson HD XP 15000 for Foil Prints as it has a higher maximum thickness.
It works perfectly, the print quality is good, the only thing to worry about is letting it dry for enough time, then sealing it with acrylic varnish.
Really, I just blanked the proxy and applied 2 layers of Inkaid Clear Matte to the card letting it try completely between layers.
The last card (Evil Ryu) shows what happens with ET4800. The print heads are too short so peels the Inkaid layer off slightly.