Not that I'm aware of, but modifying the code to support SVN would be pretty easy to do. All it really needs from the VCS is the current list of branch names. If you modified the GitApi class (https://github.com/entagen/jenkins-build-per-branch/blob/mas...) to talk to SVN instead of git, everything else should work fine.
This project was presented at a user meeting tonight and one of the attendees there was planning on adding Mercurial support.