mj,
They are more difficult than some of the others i've grown, but seem pretty easy with the right conditions.
I use the same method as all my acacias which is gently roll the seeds in a fine wet and dry sand paper, like 800-1000 grit, then soak in just boiled clean water over night, which will leave the seeds nice and swollen, then i press into a nice blank mix (no ferts etc) and leave them do their thing, keeping the soil moist mostly although allowing it to dry from time to time hasnt hurt the germination, can take up to 6 months to pop :-).
I've had success in temps from say 14deg celcius to mid to late 20's - in the shade of course.
The trick I think to keep them going outside of their habitat on mt buffalo is adding rhizobia, some say that any from a native acacia will do, but i have been lucky enough to have been provided with some soil that contains phlebophylla's natural rhizobia, which i add a small amount after the second set of bipinnate leaves show, then i will mulch the pot.
i have one at a couple years old, and several seedlings following up, I havent attempted a bulk grow yet as I wasnt confident with my technique, but my next step will be to sow 50+ as I have been getting good germination rates, patience is important!
I dunno about being a special grower, there are lots of people having success with phlebophylla nowadays, and lots more info about growing them :-)