I am currently a user of TurboPrint, and run an Epson 3880 with Cone Color Ink (which btw is fabulous ink!)
I recently have been having issues with turboprint (support is a little slow for a paid user), and so I am starting to dabble with gutenprint instead.
Previously, before I switched to turboprint, I explored gutenprint and couldn’t find a way of printing a black and white print with the black ink only. The gutenprint driver (?) didn’t seem to support this option, unlike the proprietary driver for the print on MacOS. Epson doesn’t provide a linux driver for this printer (weirdly every other x880 printer but this one).
Has anyone successfully managed to do BW printing with the black ink set on Epson printers using gutenprint or other opensource project?