No, not in inscriptions! (Even though inscriptions did in fact use length markers, there’s the superlong I for example.) When we transcribe actual Latin text we make some changes.

The actual inscriptions use heavy abbreviations, which we resolve in our text. And then we also disambiguate V into v and u. And as a bonus we often add the length markers.

So we do inscription -> cleaned Latin text.

And the cleaned text is given to students.