It is quite possible to the ticket issued. Just need to have a TA that knows the rules and can convince QF to issue it. I am currently undertaking my first stopover in the continent of origin following a return to the city of origin and prior to including 3 subsequent domestic QF sectors. My ticket was issued by my TA on QF stock (paper 081 ticket stock).

The rule change was in November 2004 IIRC. Since my TA brought the rule change to my attention in early 2005, I have routed all my DONE4 fares to include QF domestic segments after returning to my point of origin, and all have been issued through QF by my TA.