I'm using a very similar setup for when I want to work away from my 27" 4K display but still need a second screen to be productive (e.g. doing almost anything coding-related). Like the previous poster, I set it up with the external screen directly above my laptop screen which for me is much more comfortable than trying to put it beside the laptop, and ends up at a perfect eye level.
This is really neat and I want to find a similar solution. My concern is how long it takes to set things up - does it get tiring to always set up the tripod and mount together before adding on the screen? I wonder if anything exists with just a mount that attaches directly to the monitor (like Vesa but no screws).
And how is the durability of your portable display? I got one and used it for a year but keeping it in a carryon bag in airplanes eventually messed up the display from being pressed and bumped around.
It’s a bit cumbersome but it probably takes nor more than a minute or two to get set up if I have it all broken down. The Tripod folds up small enough that I can leave the “tablet mount” part connected to it and throw the whole thing in my bag. Then setup is just extending the tripod, clamping in the display, and connecting the cable.
It’s great, isn’t it? Can’t imagine working any other way now when I’m away from my desk.
I recently added keyboard shortcuts (using BetterTouchTool) on my left hand for moving the mouse cursor up and down between the centre of each display, as vertical mouse movements seem to be more tiresome than horizontal on account of the lie of your arm (less of an issue with the built-in trackpad).
Bought this LG Gram 16" Portable display (2560x1440): https://www.amazon.com/dp/B09TS43YMT
This portable tripod: https://www.amazon.com/dp/B08LGGXH1J
And this "tablet" mount that gets large enough to fit the 16" display: https://www.amazon.com/dp/B08Z7Z7QZ3
Tripod/tablet mount also double as an iPad stand for video calling, etc.
Everything fits easily in my fairly compact backpack along with cables, dongles, mouse, etc.