Novus and Nexus uses the same Sphere Scroll?

[Vespar]

Keep in mind that there is no real reason to have a pending scroll anyway as it costs nothing to apply and generate scrolls.

Not sure what you mean here, as it costs 250 soldiery tomes per ink to buy a new sphere scroll, and you need 3 ink to get a scroll. If they wanted to change stats they'd need one. (plus new materia) Now granted it doesnt look like the OP is wanting to change stats, but what you said sounds misleading.