It lacks class, but for my Lamy pen I use Lamy cartridges. I'm an itinerant English language teacher and write on scraps of photocopy paper in my person-person lessons. It's acceptable, I think, to change a cartridge mid-lesson and relatively quick, clean and easy when compared to the bottle alternative.
Using cartridge in not lacking in class. Most people would rather use a cartridge than hassle with a bottle of ink. They want to avoid the possible mess of using bottle ink. Also a cartridge will generally hold more ink than a converter.
My experience in college is that you do NOT want to change cartridges in the middle of class.
It takes too long to change cartridges and to get the ink from the new cartridge to get down to the nib. And during this time, you are not paying attention to the teacher/professor.
It is much faster to switch to another pen (fountain pen, gel pen, roller ball or pencil) and continue taking notes.
Then when you have time between classes, lunch break, or at home, change the cartridge on the empty pen.
In college, I carried TWO Parker 45s, when #1 ran out of ink, I just switched to #2, then changed cartridges between classes.
Tip: With bottle ink pens, after you finish your homework, fill the pens. This gives you a FULL load of ink when you start the day.
Edited by ac12, 19 April 2017 - 20:21.