Sigil Master ability of the Pathfinder Savant gives a bonus on saving throws against writing-based magical traps.
This seems kind of useless. Explosive runes does not give a saving throw when you read it. Serpents sigil does not come up that much. The trap has to be magical so it does not help saving throws against poison ink.
Are there other writing-based magical traps?
Would you consider the Codex of the Infinite Planes a writing-based magical trap?
How about the Anathema Archive or the Book of the Damned or the tomb of Totem of Angazhan?
If it works for those the feature might make to worth it to try and collect and the artifact books.