These "standard" chargers for schuko are not usually sold in Norway when you buy a new car, for the good reason that it does not work on IT grids.
These are usually sold with imported cars, from France or Sweden or other EU countries.
This is why I wrote "usually"

And this is why you have to triple check

The "ladebøtte" is easy to carry with you when you go to the hytte. But it charges very slow and on schuko (unless you have a Type 2 adapter to connect it to your home charger) so it is not always a good solution for charging at home on a daily basis anyway.