As a student this is related to what I want to use agenda for (which might not completely belong in this thread/ might fit better elsewhere so feel free to move it if needed)
There have been a lot of studies that in general conclude that when you’re taking in information that has to be learned/ remembered/ understood and is being delivered in something like a lecture approach, handwriting is better than typing. Reasons vary but I’ve seen/ heard variations on the themes of
Most people type faster than they write but this lends itself to trying to type every word the speaker is saying, and the focus starts to shift to words going from the ear to the fingertips without stopping in the brain along the way. Handwriting, because it is a slower process, forces you to be choosy about what you write down, so your brain is actively engaging the material.
Handwriting is more flexible and faster for anything that might involve drawing any kind of image, chart, etc or anything that involves characters not found on a standard US English keyboard (multiple languages, math, music, etc etc etc)
Using an electronic device to type notes generally involves more opportunities for distraction: facebook, text notifications, games, etc etc etc. This is less relevant for an apple pencil on an ipad, since the usual comparison is to a paper notebook and pen, but the change in form factor might help people stay focused
For me personally, right now I use Notability because it allows me to record audio and take notes however I want to do that, and also is fairly flexible in the types of formats it can handle (eg I can write on a pdf copy of the lecture slides the professor posted before class while recording audio). I don’t tend to use handwriting in Notability because I have an older ipad that has issues with palm rejection (regardless of what Notability has to say on the subject). I’m going to be getting an ipad pro with an apple pencil this summer; I’m really hoping the ios version of agenda has arrived by next September so that I’ll be able to start the new school year with everything organized in Agenda.
Regarding what usage aspects of the pencil I would want, ideally the option for Agenda to learn my handwriting, if only to remove the step of having to transcribe my notes after class. I can also think of instances where I would prefer to keep the handwriting and not have it convert to text, but I don’t know what the technical limitations allow for. I would love to see the ability to draw straight lines by pressing and holding the tip of the stylus on the screen, I use that feature in Notability a lot when I’m highlighting readings, to make my notes neater.