The other feature about the 'LIFELINE' brand are the reflective materials within the line itself.
I 'TOO' have them on all of my hang-on and ladder tree-stands and have been using them for about three years now. I like them a lot and yes, I feel very safe using them from the ground up and back down.
When heading to the field during the dark, your minor light picks them up real easy because of that reflective material in the line. Makes it real nice when it's been a while since you used that setup and possibly start to have some difficulty finding your way during the dark hours. Trust me, those lines stand out with very minimal amount of light hitting them. I've had hunters never hunt my place and/or setups before. I simple give them a basic direction to go and they were able to find them just fine because of that reflective material.
The person that originally designed them did that not just for hunter's ease, I'm sure, but if ever in the event of an accident and someone else had the head out to find you during the dark. Good thinking on their part!
I stand behind the product a 100% and would recommend that all persons use them or equivalent when climbing into a permanent fixed tree-stand.
Insuring your safe return home to your family should be the minimum deciding factor, at least that's why I bought them originally. I'm not afraid of heights and I've put myself in some hairy situations in the past. I am afraid of having to depend on someone else if I was to ever screw myself up and it could've been easily avoided.
So, get yourself a LIFELINE for all your tree-stand setups for your family's sake at least. I'm sure they all would appreciate it far more than any deer harvest.
Safety first!