The new version of BorderFX is still a work-in-progress, some of the features are not yet complete. BorderFX 1.3 adds support for Aperture 3, including 64-bit support.
BorderFX 1.3 includes both an export and edit plugin for Aperture.
Please be aware that this is beta quality software. It may have bugs, including bugs which may cause Aperture to crash, and possibly cause data loss.