This definitely looks like something I need to check out. I do a lot of one off analysis for small bioinformatics projects,and I've taken to sharing results in the Microsoft ecosystem via OneNote. I've wrapped knitr into my own library (knoter) which generates the html and figures, and pushes the whole lot up to OneNote in the selected notebook. OneNote works well for this kind of collaborative analysis, where I need to keep track of the whole discussion somewhere.
One thing I'm missing from my workflow would be a way to integrate in to an IDE so I just push a button, and it'll commit the code to a gist, and push the output to a OneNote for other people to comment on. I'm wondering if it would be possible to fork this, and tweak the calls to knitr so they use my library instead.