Earlier quoted context omitted.
Are you really rendering in a cafe that you need on the go GPU performance?
That’s not the right way to look at it. We never did this because you couldn’t get enough performance. Now you can get performance off a battery for your entire work day for less money than the competition (if reports are to be believed). In this scenario, would you render things in a cafe? Why not?
honestly, as a traveler and sometimes digital nomad, the real question is "why yes?"
There is no real reason to work in a cafe, except because it looks cool to some social audience.
Cafes are usually very uncomfortable work places, especially if you have to sit for hours looking at the tiniest of the details as one often does when rendering.