I know what Photo Black Ink looks like on matte paper; a bit washed out and charcoal-y but then I wondered what would Matte Black Ink would look like on gloss or semi-gloss papers? Anyone tried this? Does it go the opposite way with the blacks being TOO dark\plugged up? If that was the case perhaps there'd be bandwidth enough to split the difference in the digital file. Or does it not work at all and pool up or something? Yes, I know I'm being half-assed and that it's not a real solution, but I ask as mere technical curiosity!