Have left the hides on even when I have had to quarter moose. It does help in my opinion to protect the meat from dirt and bush debris. We have hung moose and deer at camps for a week or better in cool temps with hides on. One camp I was in we shot 8 deer during the week, it was cold well below freezing. One know it all loud mouth in the camp insisted the hides had to come off each deer ASAP as to get the meat cooled down so it would not rot ( it was averaging -4F ) ?? anyways it was the one and only time the butcher reamed me a new fundamental orifice for bringing him two dirty deer. Said if I ever brought him a animal with the hide off again he would refuse to take it.
I shot a deer here on Nov 1st and hung it in the shed for 7 days hide on, my wife and I cut it up on the kitchen counter a few evenings ago, the meat was in fine shape, clean, firm, well drained.
There is a butcher just outside of Angus Ont. that advertises in the OAHA mag, he will not take any animal with the hide off period, states he absolutely refuses to work with dirty meat. says it makes his job more difficult and his customers are not pleased with the meat loss due to dirt on the meat that he has to trim and discard.
This subject can, and could be debated until the cows come home, but this my opinion and experiences on the issue.