Hi, I live in Victoria and have both my EN and RN registrations. I work for a large public health network and am able to work under both but it was made very clear to me by the network that I must work within the scope of which ever registration I am working under at the time. Because I'm currently doing my graduate year as an RN I'm not allowed to work as RN bank nurse but I can work on their bank as an EN if I want to pick up extra shifts at a casual rate of pay. If you want to have dual registration you have to pay for it, each one is $160 a year. Hope this has helped.