My workplace uses Office365 and I have a SurfaceBook to run around with, so I've been using OneNote. The pen is fairly responsive and although it took some time to get used to writing on the glass, I've been making some decent notes. There was an AWS conference recently that we went to and I was using it there and it was a decent experience, although the surface book was a bit big for that. Should have stuck with a surface or surface pro. Plus, I could still duck out, do some light support tickets then go back into the app. I need to experiment with sharing notes though. It would be neat if two of us were collaborating with the notes taking process. Maybe one takes snaps of the slides and the other makes notes around or on those. Maybe next time.