> I take notes with a combination of LaTeX and OneNote on my Surface 3

I wonder how you do that - I can't imagine I would be able to make notes in LaTeX in real-time. To me, paper is just faster than any computer solution. Also sometimes you need to draw a diagram or arrow in the notes.

> Slowing down to a pace comfortable for you means, at least in my classes, that you'll miss the next thing in the presentation.

I was thinking about this recently. I teach (assembly programming) in our company using slideshow. But most teachers at my university used blackboard (for math). I am beginning to think that using blackboard is better, despite more effort, because it also forces the teacher to slow down.