Many are working on being trained. I don't think there is a list anywhere of those who have gone through any of the materials available from different countries (Canada, Australia). I would hesitate to say anyone is completely proficient at it yet - though I know several who are very good at it. Even with working on training materials, I would not say I am proficient at working in it. I can do it, but it takes longer than if I work with EBAE as my base language. NLS is working (through NFB) on putting together training and certification materials. Stay tuned for more info!