I love all your posts on various writerly things such as this, onenote, the iPad and other dohickies we writers might try. It's like you do the research on them so I don't have to. Since I just did the opposite of you, and switched to Mac, Scrivener is on my list of things to learn. I'm taking it slow since I don't want to mess the writing mojo. Scrivener has replaced much of what I used to do with notecards, scene ideas, character backgrounds, plot outlines, etc with Scrivener's little corkboard. I still write in Word. I have always written in word, even when I was using onenote, so not sure that will ever change, but as I learn more and more about Scrivener, the more I love it.