Watching from landside, outside the Cairns domestic terminal, looking just south of False Cape one could see the mountain range and all the surrounds clearly. It definitely was dimmer but being my first eclipse experience, was no where near as dark as I was expecting, given all the media hoopla leading up to it.
Certainly from my vantage point, I wouldn't have assessed the light as being less than one would experience in dusk, just before evening civil twilight, or after morning civil twilight. Heavier cloud cover elsewhere may have made a significant difference.