My initial inking of this pen was with the included black short international cartridge. That’s something I rarely do - use the default cartridge - but I accidentally engaged it when unboxing so I went for it. I should do that more often, because this ink is great! Maybe it’s because I haven’t used a smooth, rich, black ink in a while, but I’m sure enjoying it.
The included ink cartridges should never be part of your buying decision, but it does bring up another consideration: what filling options do I have for this pen? Short international options, mostly. If you are feeling frisky, Wingback mentions the possibility of eyedropper-filling this pen, but you go first and let me know.