i was just up there last week and ran a heap of different detectors over some ground at clermont. everything from the ORX from XP to the new whites 24k, Garrett ATX with the 8 inch coil, GPX4500, 5000, gold monster, 7000's the vLF's did struggle with the ground but no more than any other hot ground like ballarat diggings in fact the ironstone in Ballarat was a bit chirpier than what we found at Clermont.
As has been said above if you dont expect your machien to work miracles and focus o shalow ground and bump some rocks i'm sure you'll be able to ping a few, i personally ran into town and bought myself a 11" elite coil to whack on the the 4500 as i cna get that running super stable and quiet in hot ground. Ended up pulling some sub grammers from diggings that had had many 7000's over them.
we were on a lease so most of the bigger stuff was coming from pushes were we were taking 30cm off at a time each push produced another 3 or 4 targets which really proves how noisy that ground is. especially in the heat.
I did say many times to the lads i was with the best machine for this place would probably be an SDC considering the reef structure and specimen gold coming out, i must have detected a gold pan worth of solid signals in quarts which i handed over to the lease owner i reckon an sdc would have killed it.