I bought and use Plot inks for the same reason. I'm pretty sure ts the same as the G2 ink. I also use the Deluxe checks with all the latest security features... and because the paper is better for fountain pens - not much more in cost than others.My favorite is Noodlers QE3. It’s a blue black.
It’s also waterproof.
Crazy story, I received a call from our local police department detective bureau telling me a check of mine was found in raid of a check washing scheme. Of the roughly 1,000 checks recovered, mine was the only check that the scumbags couldn’t wash the ink out of. The police were blown away. Noodlers QE3. lol.






