My new Primos (tripod) trigger stick finally arrived. I ordered it 3 Dec 2014, arrived 15 Jan 2015. Too late for hunting trip
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But it is amazing how much more steady and solid it feels than my other PR tripod and yet they are the same weight. The ability to use that trigger thingy to move the mount point of the tripod in any direction and achieve optimal position is the most amazing aspect.
I got to use TLM's stick a little bit, and I didn't recall having to manipulate the legs to spread and unspread them as much as I do with mine. But re-watching the video at the start of this thread, TLM is using hands and legs to manipulate the spread aspect, though gravity can do some of it. Otherwise it is a "one handed" operation.
I'll try it out in the field this weekend.