conky-1.4.4 contains the latest vim-syntax. Current stable (1.4.0) doesn't however. Not sure how people think about removing it now. If people object please put a date/condition here and I'll put in some funky blocker rules to avoid collisions on files.
Treecleaner policy is now to get maintainers to remove their own packages.
I'm closing this for now, since, as you said, the version of conky that provides this functionality isn't stable. Once it is, please re-open this bug and I'll give conky-syntax the 'ol ax.