I used to be a pencil guy. Then I got older, and found that low contrast between the pencil lead and the paper made it harder for me to read. Been using black ink every since, both the Uni Jetstream 0.38 and the Hi-Tec C Coleto 0.3.
My files are a jig to cut the kurutoga and an adapter that needs to be glued that allows the twist-erase to spin. It’s somewhat less elegant than I would like but is durable and has lasted me one semester worth of a masters degree so it works.