That's a rabbit-hole question, not to derail the thread, but... For my personal preference both 2TC and single-sticking have fairly "inefficient" movement sizes coupled with tree size selection and limb navigation, so don't bite my head off because I do know that extended practice in any method should increase proficiency, but I deigned to continue with either method. I attempted both styles at face value, and then both with a "twist" towards increasing efficiency, and neither still fit in the top shelf of my toolbox. I can do it, but I choose not to, so back of the bottom drawer lol. I love sticks with aiders, but I hate the packing footprint. I really like the WEI Stepps with a K/S setup because it's simple, compact, and not too heavy (~7lbs. for my preferred 7 stepps and bag) and I use them as my ROS at that point. I also really like SRT, and given my choice of options, that's what I "want" to do, it just doesn't "always" work. WEI Stepps and SRT are the climbing methods of choice used for the previous two seasons. If I could have gotten legitimate 7-8' movements (each move, not just the initial one) out of single-sticking or 2TC, I might still be there...
I do a lot of crawling through thick and busting brush, and also climbing up (and down) in very early/late darkness. I also hunt in all weather types. I forsee the Sladder being used for "1-3 move heights" in conjunction with a platform, stowing it at height, and then rappelling down.
I'm not bragging when I say that I can run the WEI setup blindfolded to height without hiccup or additional noise... Obviously you need to know what height, etc., but...