Import-Export "skin mesh" vertex tree?

According to the manual, the Skin modifier acts on a vertex tree, with some additional information about each of the vertices. Is there a way to import/export this data, ideally in a human-readable format? Ultimately, I’d like to be able to generate the required data with a separate program, and import it into Blender to create a regular mesh object.

Dust3d uses the same B-mesh algorithm, and its native .ds3 files would probably work, but I would prefer to use Blender if possible.

Edit: I found the relevant python API documentation here.

There is now an addon on GitHub.