@cathedralcolors Alcohol is a solvent, so it can dissolve certain other inks. I clean my calligraphy pens with alcohol and it just eats up the inks on my pens, so I can’t use those inks under alcohol markers, just over them once the alcohol has dried.
You’d have to find an ink pen that has an ink that can stand up to solvents. According to my research, Hi Tec C (traditional, NOT collector) gel pens, Zebra Sara (the clip version NOT the normal sarassa), and Pilot G2, as well as Sakura Micron pens have been tested and approved to work with alcohol markers like COPICs.