Actually in many cases up here evidence of sex is required by leaving it naturally attached to the meat, antlers in many cases isn't good enough. Mainly because I guess back in the day guys where going WAY shooting big bull moose, hauling the antlers out, and then shooting a cow when they got close to the road to show for the meat.That is pretty heavy evidence, easier to use the genetalia or however you spell it.
I agree and after the animal is broken down would then start de-boing the quarters which would remove the hid except for evidence of sex, that stays. This has to be the fastest way though to get the meat cooling iniatially.Thats a great video, however I would be nervous about leaving the hide on in warm weather. The skin and hair really insulates the meat. I quartered a deer like that once and it tasted gamey. In the snow or cold weather that method is a real time saver.