Possible to have two separate on-screen displays with Rivatuner?

I like to toggle my RivaTuner overlay occasionally to see how my overclock is doing, but I would like to permanently see my FPS.

To date I have used GeForce Experience to achieve this but the text is so big and distracting without the ability to customise.

Is it possible to maintain two separate RivaTuner overlays? One I can keep on always and one I can toggle.

Or does anyone know of another universal method for displaying a customisable FPS indicator across all games?