I just ordered this: https://www.nomadasaurus.com/espresso-display-review/ https://www.cultofmac.com/768391/espresso-display-v2-review-touchscreen-mac/ https://www.forbes.com/sites/bensin...-and-stylus-support-to-a-mac/?sh=6282e1c4174a I like having two displays (have a Pro XDR display at home), and it seems like this one is small enough to carry around in addition to my Macbook. Plus, it has a touchscreen.
Certainly a very nice, premium offering, but mobile USB powered external displays have been around for a few years. I would shop around first. Again, very nice monitor.