This pen gives beautiful fine lines like dip pens but without too-much/not enough issues they have, and I can write uninterrupted by needing to reload. Makes practice much more fun and easy. My sample below isn't on great paper, but it gives an idea of thick-to-think ratio. I have also used it for drawing.
My one complaint is that the pen came with no instructions on how to fill the cartridge, so if you are inexperienced as I was with this type of mechanism, here's how: remove the outer barrel, dip the whole nib into your ink. With the nib submerged, twist the red piece at the back clockwise to lower the plunger, then counterclockwise to raise it, drawing ink up into the cartridge. Repeat this to remove some of the air that was in the cartridge to start with. (I wasn't able to remove all the air, but good enough). Pretty simple once you know the trick, but you might need a clue in.