Ask HN: For those running Node.js on Google App Engine, how is it?

How stable is the node.js implementation on Google App Engine? Most backend applications I have written have been using node.js, however due to it seemingly not being a first class citizen in Google Cloud Platform, I initially opted for Java.

This has caused a slight productivity hit due to unfamiliarity of writing server side Java. Is the Node.js environment ready for primetime use? Should it still be avoided in production environments? What has your experience with it been?