Attached is both my presentation, and the demo code along with several demos I didn't get to. Feel free to ask any XNode specific questions here, or on the LAVA subforum on scripting where other XNode and VIM related questions are. Remember these features are unsupported outside of NI so don't call them for support.
For those that couldn't make the presentation it has been recorded and uploaded on youtube.
During my presentation someone asked what the valid Replies were for the various XNode abilities. I've posted over on LAVA some of my findings by scanning already made XNodes to find the values and some descriptions of what they do.