In university, my friend used an iPad for all his notetaking. He had a keyboard for it, and used it like a little laptop. Bet he would have been all over this!
This is very common. A majority of my engineering maths students are writing lecture notes and exercises on a digital device, the plurality on iPad (Surface next most common). Many of these iPad users have a laptop as well as or instead of a keyboard for their tablet though, as the extra screen and flexibility are worth it.
The UI is good, looks clean