FR: Alternate fingerings on opposing side of staff?

Instead of having alternate fingerings next to (or above/below) the standard fingerings, I would love to have an option to have them on the opposing side of the staff, so if my standard fingerings are above the notes I’d like to have the alternate fingerings below the notes. As of now these are the only options I can see:

The primary reason is for both performance and pedagogical reasons. In a dense score with slurs and articulations, the numbers when combined close together, even with parentheses, can be more challenging to quickly sight read:

Sometimes in pedagogy it can be helpful to keep them visually separated, so beginners vs. intermediate students can know to focus on the fingerings above or below. Or, to more easily practice both versions with less confusion. For example, from my Galamian scale book, I think this separation is helpful at a glance to see them separated:

Thank you!