I think we should be doing that but as you say Ange doesn't see RCB and LCB he just sees CBs.
But if that's true he wouldn't care about playing them in the position that favours their strongest foot. So he says one thing and behaves in an opposing way.
Well, you'll see today.
If he behaves in the opposite way like you seem to think then you'll see Davies at LCB instead of Dragusin.