I ordered this ink on impulse. I was re-ordering a bottle of Skrip Black, which I find works well in almost every pen. At the same time, I was experiencing frustration finding just the right ink for my Stipula Etruria Mila Gold Rush. I found some inks that behaved well but were not the color I wanted, and some with colors I liked with this pen but were (mostly) too wet, even pretty dry inks like Diamine Prussian Blue which was close but not perfect. So, I added Skrip Blue-Black to my shopping cart. Not a major investment, and I was sure it would get used in other pens, if it didn't do the job in the Etruria.
The Skrip Blue-Black arrived this morning. I washed out the pen and re-inked it. It was amazing. It met all my criteria!
I found few mentions of this ink on FPN and only a very few old reviews. None of them addressed the strong points I was seeing, so I thought I would throw my observations out for comments.