tailor for svn to hg

Well after attempting to convert the portal part of the sakai subversion repository to mercurial I have discovered that tailor (the tool I used) doesn't understand svn tags and branches (or doesn't convert them to mercurial tags and branches). So although is seems to have converted the portal ok. I now have a huge checkout:

buckett@oucs-matthewb:~/tmp/portal $ du -sh *
228M    branches
4.0K    project.log
739M    tags
23M     trunk

So I think tailor would well for converting a branch (eg 2.5-x) or trunk but not for keeping details about when those branches were made from trunk.