I personally use the same parachute cord tow-rope that I use to haul my bow up during archery season. I keep two attached to each end of my hanging Gorilla lock-on foot rails or the bottom bracked of my Lone Wolf Sit n Climb.
My process is essentially the same though: I am extremely meticulous about ensuring that all limbs are clean below me (to minimize having your gear whacked around) My backpack is secured first to one end of the tow ropes on either my bow or firearm (also unloaded) They are stood on end atop the backpack and secured through either running the riser or sling. I then make my ascent. At this time, I will note that either my linesman prussic knot or Fallguy belt retractor (depending on stand, of course) are secured to my four-point safety harness carbinger prior to any climbing.
When I have safely safely stepped down unto my stand platform or reached my desired height in the climber, I will then hoist up my firearm or bow first, off of the first tow line, (which is then secured to a screw-in gear hanger-firearm is then secured with an additional bungee cord) immediately followed by the second line with my backpack.
To go down, the order is reversed-first backpack goes down followed by firearm (again unloaded) or bow stood on line prior to my descent back down to Earth.
When firearm hunting, my guns are NEVER loaded until safely in my stand, gear situated, ready to hunt and likewise are unloaded IMMEDIATELY after the decision has been made that my hunting day has come to a conclusion. I have followed this practice religiously for over 20 years and it seems to work well for me.
I do understand folks like Petey and others, that are accuracy fiends that go through seperation anxiety
with their firearms though!