Thanks for the suggestion. At present I haven't the faintest idea what would be needed to achieve this. It certainly looks interesting, but we're pretty stretched for resources right now.
Tesco have been evaluating Node.js recently. One of its few downsides for us is its lack of support for XSLT. From previous discussion on your blog, I know I’m not alone in hoping you’ll consider filling this space. Any change of heart on creating a version for Node.js?