You can do this with most Lamy pens, too, which is where I wound up apparently by sheer happenstance. Do I have a $12 steel nib shoved into my Dialog right now beacuse Reasons? Why, yes I do. (If I sold its stock nib, which is currently safely tucked away in a box, I could probably use that to finance four or five new pens.)

Unfortunately I'm at the other end of the pen. I've got a dip pen with different nibs for that, just thicken the ink as needed.

I want to know how the different pens feel in my hand. I want to see their shiny lines on my desk. I want the magnetic click clack of a Monteverde Axis right next to the sleek and unique Pilot MYU.