My husband likes this pen. It is easy to carry around because of its size. It’s lightweight and it writes very smoothly in the Omniflex nib. The only drawback is that it takes cartridges, which is fine with him. We knew this when we purchased it. I think it may also be used as an eye dropper pen because it was shipped with a pipette, and it seems to have a silicone gasket where the two parts of the pen screw together.
My husband is enjoying the pen very much!