I tested it but it does not work. It generates two entries for each post but with only the different prefix related to each language, the slug appears on the main language in both cases so it fails for one of them.
Could you tweak your plugin in order to support this? Would be really great!
At the moment, I do not have time to work on that. Sorry. I have recently added basic support for the new Polylang plugin in the development version and need to iron out some quirks before it’s ready for stable.
Adding support for a plugin to another plugin will take too much of my time… Unless someone can contribute working code, of course 😉