I have not used a safety harness for 30 years because I feel so restricted and also feel it is a good way to hang myself in my opinon. I feel if you are in good physical condition, alert and prepared for the hunt in all aspects- take the garb off and enjoy the hunt. Who needs more straps/ accessories hanging around you. Depends alot on your personal balance and staying awake.
I know a guy who used to think the same thing. Now, he gets to spend the rest of his life in a wheel chair. He is paralized from the waist down. He is also 31 years old.