Hi there - just getting back on the forum as the season approaches. I have 3 sets of the sticks. Agree on setup. I would say impossible to ascend the tree once. I do the same - take gear to the base and start seting sticks ascending to attach each one.
They do attach to trees very quickly and are very stable. I have used several climbing sticks and will take the lone wolf over everything. They will allow you to adapt to the tree. In my area, trees that are climbable are hard to find so use hanging stands. I think they are great in that environment. The offset gets your feet away from the trees so you can lean in to free your hands to do the work.
Don't get me wrong - an aluminum extension ladder for setup would be preferred!
Good luck with the sticks.