My experience so far? Fine! The pen took the cartridge easily, ink found it's
way to the nib in short time, and I never saw any skips. I do not like the hard
push and pull required by the snap-on cap, and the finish on the clip and
plastic parts is third-rate.
It writes with a medium line, wet ink, and the lines are water-resistant.
I plan on having this pen around as a give-away, or as a FP for the car. Should
be easily re-fillable.