Excellent Pigment Ink
This is my first bottle of Sailor micropigment ink and it has really impressed me! It's been in a Metropolitan with an EF nib for over a week now, and there have been no issues with clogging or hard starting, which I was worried about with such a fine nib. It behaves like any other ink I have from Sailor, which is to say very well.
There is some shading on all paper types I have used. It is very waterproof, and very resistant to smudging after it's dried. Pretty impressive ink overall. Love the blue-black color.