You don't have to change from the qwerty layout for general typing.
For example, you can program the keyboard in such a way that pressing X+A sends Ctrl+C keys to the OS, where X is a custom modifier button (Not Ctrl but a separate button that you assign for this use case) and A is, well, whatever other button on the keyboard you want to use for this, not necessarily "C".
Or you can have a single button programmed to send Alt+Tab, or... whatever, really, the firmware is very flexible.
For example, you can program the keyboard in such a way that pressing X+A sends Ctrl+C keys to the OS, where X is a custom modifier button (Not Ctrl but a separate button that you assign for this use case) and A is, well, whatever other button on the keyboard you want to use for this, not necessarily "C".
Or you can have a single button programmed to send Alt+Tab, or... whatever, really, the firmware is very flexible.