This is a good earthy brown that dries quickly. However, it takes feathering to a whole new level. Any ink that can feather on Rhodia paper with an extra-fine nib is quite impressive.
Here I am doodling the Inkling.
Edit: Peninkcillin did a great review of this same ink and found very different properties. My bottle feathers and dries quickly; Peninkcillin’s didn’t feather at all and dried incredibly slowly. Very strange! Maybe the formula changed at some point.