I too was there today - i have been three times and not yet stayed until the end. Unfortunately got spat off the back fairly early today - took a turn too early and couldn't handle it. They usually go flat out - they have been much faster than today - and yes don't seem to slow down up the hills. I'd say probably the fastest regular training pack i have ever ridden with.
Wait till the thursday ride when they really hit the hills - I stand no chance.
Do you live in Maitland DW? if so are you interested in any afternoon rides?