Unless I'm missing something, how do can you view both scopes and whichever control functions you are using when in the vertical mode in the Colour page?
If your screen resolution is too low to display both the scopes and controls simultaneously, you can use the Workspace menu > Video Scopes menu to turn on the Scopes in a floating panel.
Thanks. I figured that may be the only way around. I'm on a 13 inch MacBook Pro screen. I've reverted to horizontal layout. Easier to work with for grading.