This mod swaps out all of RDM's rapier animations to that of a grimoire/codex used by ACN/SMN/SCH. For obvious reasons, also replaces the VFX of melee weaponskills, including the non-enchanted versions. Doesn't change Reprise, Engagement, Corps-a-corps, or Displacement. I might change the VFX/animations for the former two at some point.
Should be compatible with either Penumbra or Textools. Note that this mod doesn't actually replace any rapiers, for that I recommend using the Glamourer plugin for Dalamud (https://github.com/Ottermandias/Glamourer), since you can save which model you want to use per character and the game seems to treat it as actually having a grimoire equipped, allowing book closing animations and such to work (most of the time).
Not that anyone cares, but I refer to this mod as "Red Sage" since it takes RDM and turns it into something closer to a sage from FFIII; i.e., a pure caster focusing on both black and white magic, without any martial component mixed in. That and I really like the book animations in FFXIV but SMN just doesn't vibe with me at all. Dunno if this is something that appeals to literally anyone else, but if it does then have at it.