I use US layout with Caps Lock mapped to toggle to my "native" layout. This way I can easily code without RSI-inducing combinations to get the frequently used {}[]\, and just tap caps when I'm writing emails without needing to retrain my muscle memory of where åäö are located.
On Windows there's also a setting to get each app to remember the selected keyboard layout (Set-WinLanguageBarOption -UseLegacySwitchMode) so I don't even need to switch most times.
On Windows there's also a setting to get each app to remember the selected keyboard layout (Set-WinLanguageBarOption -UseLegacySwitchMode) so I don't even need to switch most times.