I think the males tend to be a bit more busy and arboreal in my limited experience.
I did see a study, or maybe it was in The Mutton/Julander book that made mention of males being found in the canopy more often and having a somewhat larger range which makes sense.
I have only seen Kevin in a ground hide once and a few times on top of a hide. He's been perched 98% of the time, so I'll be curious to see a comparison between your Brisy pair.
My female coastal has opted for the floor of the cage in the last few years and rarely perches at least when I'm awake. I think she may climb at night, and I think the Bredli cruises the floor at night.
You are in a good position to study the male/female differences since your pair are close in age and size.
Of course we haven't mentioned "The Rock" here, but that's another subject!!