Sage's skill Pepsis is useless

[RyuDragnier]

I don't think Pepsis is useless by itself.

To me, it's more like we don't have content where Pepsis is useful since SGE has a lot of better tools that he would use before remembering that Pepsis exists.

Yep, it's akin to Emergency Tactics on SCH. You don't use it unless...well, it's an emergency.