Alongside other dip nibs using the same Robert Oster Glistening Orange Rumble ink sample.
TLDR: If you don’t already have a Kakimori dip nib, the Colorverse Shuttle dip nib would be a good purchase, especially if you want to use it more for writing. I had a slight preference of the Brass because the line was just a wee bit thicker and held a bit more ink, though I probably would never use it for more a lot of writing (that’s what FPs are for, lol), But, I liked the Aluminum for writing on Col-O-Rings more than the brass. On smoother paper like Tomoe River, I liked either of Shuttle nibs a bit more than the Kakimori steel nib (and we all know how I feel about the Kakimori brass regardless of paper). However, given that my primary swatches are done on Col-O-Ring cards, the steel Kakimori feels smoother when making the large swathes of ink. You may like or dislike how either nib feels on different kinds of paper (like textured papers or watercolor paper versus Tomoe or Rhodia) or if you plan on using it for writing versus art, etc.
I would hands down get the Colorverse Shuttle nib holder over the Kakimori because I don’t have to worry about the nib eventually sliding out of the ferrule like what happened with 2 of their nib holders. Plus I like the ability to disassemble it in case of inky accidents.
The Colorverse Shuttle nibs cost $42 and $48 for the Aluminum and Brass, respectively. The nib holder in Aluminum costs $75 and $60 for the large and small, respectively, while the Brass holder is $85 and $67. They are priced similarly to their Kakimori equivalents. You can find the Colorverse Shuttle products on the Pen Realm website.
(Disclaimer: The two Colorverse Shuttle dip nibs and the nib holder were purchased from Pen Realm at the 2025 CA Pen Show. All of the other products are my own, including the Kakimori nibs and various holders.)