i use the summit prussic knot and rope system...easy and works for me...
i have to get back into my habit of putting that rope on as soon as i step into my climber...i was lazy a few times last season...truthfully, if there would be an accident, i bet for me it would be when im hugging the tree 20ft up trying to swing the rope around and catch it at 0430 and got 2hrs sleep and didnt put on my layers yet so im half shivering and trying to be quiet and all that...but thats usually the time im lazy...only takes a second and is easier to do at the base of the tree....
but im guilty of it...coming down its always attached because its already attached and i just slide it down with me...