Yes they would be performing the same duties as existing LAMEs. A Domestic Line Maintenance crew in Syd and Mel has 30-40 LAMEs who do the transit checks, sign the RTS and undertake overnight maintenance. At the secret meeting between Qantas and the other unions, they were advised by the airline that a crew could be run with 2 B licences and the rest Cat A licences.
The Cat A was first introduced in Eurpoe by EASA about 15 years ago. I think there are about 32 countries that fall under the guidance of EASA. Only about 3 of the National governing bodies there have allowed this watered down licence, the rest have rejected it.