its very possible 3rd party controller companies will make these converters, its as simple as what does "x" send to x360, then if "x" is pressed on xbox controller, then send x360 "x" , after all the x360 controllers are USB, hook 'em up to your computer and see the output, therefore a converter is almost a guarentee from 3rd parties, as long as they are planning to make 3rd party controllers.