Like Neal said...+
Neal,
In 50's when I went to school our dear Nuns (with the greatest respect), didn't permit possession of a ball point pen. CONTRABAND!
We used pencil until whatever grade (no erasures permitted). Then we had to have a fountain pen. It was wonderful when that old ink reservoir let go and you had a blue stain from your pocket to your waist. Then someone came out with a disposable ink reservoir (cartridge), fewer accidents, but still leaked.
I believe that the roller ball and ceramic refills of today, give one as close a feel to a fountain pen without the potential mess. If I were to say it in a single word it would be that they add "Flair" to ones writing.
I may have to make one for myself, try it out once again and transport myself back in time. Oh that nostalgia.
I can remember what a good friend of mine from my old fire company used to say. "The Indians knew a good thing when they saw the Winchesters didn't they. They knew bows and arrows were a thing of the past. That was before the compound bow---old friend!"
Old typewriter technician (30 years),
Charlie