I uploaded v0.3.1 of OverrideFormats: Event: OverrideFormats (..or viewmodes on folder change)
It features an ifLabel() function from now on, so you can switch format/viewmode/columns etc. by drivelabel.
If you configure an expression like ifLabel("ExtDrive") && setView("details") e.g., OverrideFormats switches to details mode for you automatically for that drive/label.