That's a shame, but not a surprise. The smaller regions tend to struggle to get coverage. Suprised and kinda sad Clonakilla doesn't find it's way up there though, Tim Kirk is a genius and a worshipper of the northern Rhone. I think I've said before that I regard his Shiraz Viognier as the best wine in Australia.
I also am a huge fan of GSM blends, Rhone or otherwise. If you like the Spinifex, try the Massena Moonlight Run GSM...one of my personal faves along with Grant Burge Holy Trinity and John Duval Plexus. I am with you on that, we do Rhone style GSM much better than Rhone style syrah