RE: Adjust while you climb Climber = What a dream!
The top interlocks over the bottom to form a tight package. They are tied together by a cinch strap. The backpacking straps are VERY comfortable and adjust easily. A pull of the thumbs on the strap loops loosens the straps so that getting the stand off is a breeze.
The seat is easily and totally removeable. It has tie-down rubber loops that wrap around the frame. You can climb with the seat in the shown position. You can reverse it, once you get up the tree, to face away from the tree. It is possible, as Davidmil said, to put the seat on the angle frame to lean against the tree. Or, you can do as I did last night and remove the seat entirely. I hung it on a hook and stood with my back against the tree. And, if you're in a sitting position facing the tree, it slides out for about 4" for a personal comfort level.
It also comes with a full body safety harness. Finally, it's hard to see, but it comes with two straps that connect the upper section to the lower section. When you get to your desired height, you tighten these straps and the whole stand just locks to the tree. When you're standing on the base, extra tension is put on the top which makes it lock to the tree so that you can lean against the top without any movement. This feature is one of the design criteria that really sold me on these new Buckshot stands.
BTW, the adjustments are made via cranks on both the top and bottom. You must/should take tension off whatever section you want to adjust. Last night, when I wanted to change the angle of the top, I just stood on the bottom and turned the top crank. It was VERY quiet. When I wanted to adjust the bottom, I sat on the top and lifted my feet to just a slight amount of pressure on my toes. The bottom crank was as easy and as quiet.