And who might prefer a cartridge/converter system, you ask? Well, I normally shy away from using shimmer inks in my piston fill fountain pens because they tend to be difficult to clean, especially with demonstrator pens. For this writing sample, I inked the Key West Islamorada Gold with Diamine Gold Star shimmer ink.
The medium point lays down a line that is thicker than most European broad nibs and has a decent flow that keeps up. The bolder line width allows you to see the ink color and shimmer better than smaller nib sizes. The nib's feedback is pleasantly smooth with little-to-no flexibility.
The fine point on the Key Largo Blue is inked with Sailor Ink Studio 741. While having slightly more feedback than the medium point, the tighter line is more accessible for general writing.
The cigar-shaped profile of the Key West fits nicely in hand. It is narrower in girth compared to the Narwhal Schuylkill model but still carries a comparable weight thanks to the metal section assembly and barrel threads. The sparkling resin has a slight texture to the surface, which adds more grip to your fingers.
Posting the cap on the back end of the Key West extends the length of the pen to a size that is still well-balanced to write comfortably. The edge of the metal cap band and the metal barrel threads are not sharp or intrusive. Overall, the Narwhal Key West has a pleasant writing experience that complements its bubbly personality.