It's one more thing to take with me. It sorta restricts my movement. If I want to shed some clothing I have to take it all off and back on again.
It's also one more thing to bring out with you along with hopefully a body still alive and in good condition. My SOP harness does not restrict my movement, in fact it gives me the confidence to get into some positions for a shot that I might not otherwise be able to do. If you put the harness on over your bottom layer of clothing and layer over it the strap can feed out the collar and you can remove layers as you need to. There are really no legitimate excuses for not using a safety harness. That is unless you just naturally have suicidal tendencies. Most of the near mishaps I have hade were in ladder stands. Slick rungs and rubber sole boots can cause problems especially when wet or when cold and cramped up from siting for hours.
wear your harness from the ground till down!!!!!