AR/XR absolutely sucks for anything productivity. Do not be fooled by the massive marketing campaign that Apple is pushing. This stuff is nothing new, headsets have been around for quite some time, and plenty of people have tried to use them for productivity, and they all suck. Lighter units suffer from lower resolutions and lack of capability (many are simply just a display projected in your FOV without any AR/XR), and have issues with blurriness/latency, while heavier headsets are just too bulky to wear for extended periods of time.
If you want the most productivity on the go, nothing beats a laptop with good resolutions that runs linux and the i3 windows manager (and no, nothing on Mac comes close). Once you get used to i3 commands, you won't need a second display.
For AR/XR, wait till someone releases a pair of glasses with a tiny low res monochrome text based Micro Oled display, with an open source interface.
