[bentcorner]

At least for me as a very casual musician, I instinctively know how to map all the notes on the staff and maybe 2/2.5 lines above/below. Most sheet music uses the octave above/below notation when necessary too, so it's not common (for me) to need more than that.

When I was younger and played more complex pieces, my teacher and I would sometimes write down notes that were way out there just to help things along.

Personally at first glance this notation is jarring to read, and I don't know if it would make sense investing in learning this when literally everything else I've seen and own is traditionally notated. Where I find challenge in music is not understanding notes quickly enough, it's my physical mechanics, memory, and expressiveness.