I’m in engineering and have used active digitizer tablets since the T2010 in 2007.
However, I rarely use the digitizer now, considering that OneNote supports Latex-like formatting. Only for diagrams and small sketches is it useful now… however, I did pick up a Surface RT and hoped that a capacitive stylus would be sufficient for those small use-cases. Nope—had to return it, sadly.
Also—by any device, you mean any device with OneNote installed, right? I can’t seem to pick up ink notes on WP8 or Android or the web app. (: (Or math, for that matter.)
YouTube works in mobile Chrome, and nobody’s saying that Google should shelve YouTube on Android… It’s a different experience—and many often prefer the app to the browser if it’s built well. I’ve got my defaults for YouTube videos on Android set to open in the YouTube app—you?