I couldn't gather much additional information from the slides, but do I understand this correctly that this substrate vm is an alternative jvm implementation th

I couldn't gather much additional information from the slides, but do I understand this correctly that this substrate vm is an alternative jvm implementation that is faster and requires less memory? Would it be possible to port the usual jvm projects like Clojure or Scala to this in order to claim the same speed/memory gains as the described ruby implementation?