Writing on the paper felt somewhat scratchy with any fountain pen nib that was larger than a European fine tip. Writing with ultra-fine gel pens (like 0.38mm) was also a bit scratchy, as well as hybrid ballpoints (0.7mm and smaller) like the Jetstream and Acroball. Rollerball inks tended to create wider lines than normal, though they didn't seem to have issues with feathering.
While the ink tests weren't stellar, I was rather surprised with how good this paper feels when using pencils. Being that Blackwing is a pencil brand, this makes sense. Writing with the different Blackwing pencils felt smooth and responsive due to the fibrous paper, and other pencils felt just as good. This is a paper that excels when it comes to graphite-based writing instruments and tools. If only the pencil marks didn't show through to the back of the page so prominently!
Everything about the design and form of this notebook shows that Blackwing knows how to make a good notebook. Other notebooks that I've tried from Blackwing that use a different type of paper have been really impressive. It's a shame this one doesn't perform as well. The fit and finish of the notebook is fantastic. It's a joy to handle with your hands due to the soft but rigid cover, the fabric-covered spine and the snappy elastic. And including an elastic loop on the spine to hold a pencil is a nice touch. It's sized just right to hold a wood-case pencil perfectly. In fact, the notebook also comes with a limited edition volume 710 pencil that uses Blackwing's soft core (same as the standard matte black pencil). This is a product I want to love, but the paper performance has me holding back when I'm picking a notebook to use.
In a world where we are spoiled for choice, paper quality is a huge factor in choosing a notebook. For me, the Slate isn't one that I'll be choosing again, but I'm glad that Blackwing has other great notebook choices that use more accessible and fountain pen friendly paper. At $30, this limited edition notebook is something I'd only recommend to Grateful Dead or Jimmy Garcia fans as a collectible item. The standard Slate notebooks are $25 and also include a standard Blackwing pencil. If you're only planning to use pencils, then the Slate is a great option. Otherwise, I'd go with something else.
(Vanness Pens provided this product at a discount to The Pen Addict for review purposes.)