I just acquired a Pelikan M1000 with an F nib, that I inked with Pelikan 4001 Königsblau (Royal Blue). It is a good combination, the pen is quite a wet writer, the ink rather dry so it yields a proper linewidth on my preferred paper. But.... Pelikan 4001 Königsblau is not the most exciting ink imo. I tried Iroshizuko Tsuki-Yo, which I find nicer, but that is a wet ink and it shows: line width increased too much to my taste. Next, Waterman Mysterious Blue. Good line width, but again, not the kind of colour that really impresses me. Together with the pen, I bought a bottle of KWZ #5 Blue, the iron-gallish type. I like that colour, have it in another pen with an F nib now. But I am a but worried to use this ink as the go-to ink for the M1000. I know it's only slightly acidic, not too much irongall in it.... but still. This is my first Pelikan, and my first bottle of KWZ ink. Waddayathink... should I let these get together, or not?