I was using 00 brushes on this thing!! WTF?!? The first pages of Uncle Silas I was doing something similar... These days of course I just ink straight into Photoshop so I can really zoom in and make sure I get all those details I want, so I'm fortunate on that note.
I also HATED the thought of needing to scrape back any ink or use white gouache on the top of the black inks, so I was meticulous in the pencils.