[lmm]

I've had the GFCI switch in the main fusebox in a couple of modern-ish apartments. That seems a perfectly sensible place for it, it's where you'd go to check whether the room breaker had tripped anyway.

[mauvehaus]

That complicates things a bit in the panel because the breakers need a connection to neutral, but yeah, otherwise a slick setup.

Newer panels and breakers are plug-on-neutral, older breakers have a pigtail to the neutral bar.

[foobarian]

My house came with an EV charger wired through a GFCI breaker. That damn thing tripped constantly because I guess it was malfunctioning? And they are quite expensive for a 50A version.

[lmm]

Or maybe the charger was badly wired and the breaker was preventing it burning down your house?