Reply I received from RAA on 20/9/12
We accept BFR’s conducted in VH registered aircraft as suitable for an RA-Aus BFR provided they aircraft is under 1500kgs MTOW, single engine and the review was conducted under day VFR (no multi-engine or IFR renewals).
Likewise, if the 90 day currency requirement of three take-off and landings prior to carrying a passenger are conducted in an aircraft which can be registered RA-Aus but holds VH registration, this is also acceptable for RA-Aus currency.