The layout is what matters for vim and it's derivatives. I might be wrong here, but if you really need to be able to use the same keybindings as you would on a English qwerty one, you could try remapping things to their addresses or whatever that's called - basically the same key, physically, regardless of its layout mapping.
That being said, it's vim, you can remap the command to get back to normal mode from terminal mode to whatever key or key sequence you like most.
Using mouse to scroll up and down your terminal window inside vim also gets you back to normal mode.
And, well, quitting the shell of your terminal in vim works just fine - either via command
or hitting Ctrl+d
.
And the income for one? I'd imagine the taxes would tend to flat out a lot of differences, but I know it's gonna depend on so many things that's it's best to omit it.