Sketching With DeAtramentis Document Brown Ink

For a change I've been using a fountain pen loaded with DeAtramentis Brown Document Ink.  I'm not one who likes real stark black so I normally use a soft black or dark gray ink like Lexington Grey.  Thought maybe I would sketch with the brown for awhile to see which I might like better.

One thing I've noticed, this ink 'seems' to flow so smoothly in my Lamy Extra Fine Nib.  Maybe it's the nib...maybe it's the ink....I really don't know.  Anyways, I've had this brown ink stored in my pen for months and unlike other browns I've tried, hasn't clogged or dried up in the pen needing help starting it.  That alone is a plus!

Also trying a new eraser called VANISH Four in One Eraser.