I just set up a test SPv14 5100 environment, and yes it does support monochrome multi K for up to 7 densities, just as with older model Epsons, with totally assignable ink to cart setup, including "none". Of course I had no printer to try it with, but the support in RIP is there. For that matter, it's there for HP as well, assuming some modified multi K inkset. The remaining Canon issues, like suitable ink, I'm not knowledgable of. Gloss optimizer is another issue, if you want it to go down in the same pass as your image forming inks, rather than a second pass like the current Cone gloss system, you'll have to do it with a spot channel setup, and build your channel in PS before printing. It can be a solid density, or something derived from the image, or some combination. Having done that myself., I can tell you it's a bit of work to get happening, but it can work. I was doing it with a k7 Cone setup in an Epson, and failed to get a result as good as a 2 pass setup, so dropped it. Perhaps another ink may be more successful for a single pass spot channel option.