Please carry on, this is good stuff.

Before rails no-one used Ruby, the parallel implementations of svn and git you mention are heavily used in Eclipse and throughout the Java world. They gain access to all the advantages of the JVM. By using clojure they probably attract a better standard of developer. Why bother introducing a buggy blob of C when they can do it this way.

Thats one way to stop all the shops that slap XP on modern hardware, due to corporate IT policy.