Same here; some accidents with punctured cans in a backpack (coated fabric, watertight) led to loss of some notes written with normal blue ink. The stuff with with "Pelikan Fount India" (the archival ink they sell at the local shop) just went from "looks like laser-printed" to "looked like normal black fountain pen ink". No issues in a EF Kakuno. When dry, needs soaking/washing to un-stick much more severely than normal blue Lamy ink. Still fine for using more than once a week.