If it does a dual listing - the question is will it be US based or Aust based. They may take the company to the US as most of their production will be there. It might become a US company.
From my experience - the OTC would not qualify for the new shares. I don't know about the others.
The listing over there would be taken up by institutions and funds mainly and there would be a 10-20% discount selling that CR. JMO.