I contacted ACT about their Z-Wave products do determine if they have plans to produce an Australian/NZ version of their range - essentially the same as the EU product but with different power plugs and slightly different RF frequency.
Apparently, they are quiet interested in doing so, and would be keen to contact a local company willing to JV with them to spread the dev costs. Does anybody know of an HA type company based in AU/NZ that would be interested in pursuing this?