Hi Ian,
That sounds great. It's always great to have some help. Let me know if you want some context for what's going on in the implementation. Those projects look pretty cool. A more recent advance we can count on is GraalVM and the accompanying Truffle API, which is slated for the JVM 9 release. It also looks quite promising and the JRuby folks have a working implementation which appears to be quite fast.
Thanks,
Rahul Muttineni