Nice story :)
Node was always nice to quickly show off something. I remember playing around with Node, the first time, in the end of 2009. Back then it already was clear that it will probably become huge.
I think that's often how new tech slowly sneaks itself into a company. Some developers playing around with it, talking about it at lunch, demonstrating that it is way more productiv than the previous solution. Then the technology gets used in some minor important project, after that maybe in some more important project, and so on.
Couple of years later, same thing happens with some newer technology.