I know of two organisations at Camden that require compliance with CAO 40.2.1 recency requirements before they will allow you to fly IFR in their aircraft.
Maybe its because of this:
'The recent experience requirements of
the command instrument rating (CAO 40.2.1 para 11)
should be used as guidance as to what minimum recent
experience is likely to be required.'
www.casa.gov.au/download/caaps/ops/5_13_1.pdf
Would be pretty hard to defend a guy they let go off doing a solo ILS 23 months after his last one.