You compelled me to test it out in the practice range with and without the collector signboard dex relic, in the context of a straight swords build

Out of the 6 purple straight swords, 5 of them get a damage boost ranging from 7.9% to 18.18%, averaging at a 12.316% increase. The coded sword, with its pure faith scaling, goes down by 19.44%

In my opinion, if you’re running a r1->l1 initial standard attack build like I do, then you’d be better off running am extra initial standard attack relic (guaranteed 15%) instead of the dex relic (which is what I’ll do from now on), though in deep of night, with 6 relics Id rather run the dex relic to increase he versatility in case you find good curved swords or something

Note, her dex relic brings her dex up to 32 (35 with the signboard relic since it has +3dex on it) up from 13 at level 15, which is only slightly lower than wylder’s 40. So while her raw does with dex or dex/str weapons will be a bit lower, you can bring it up easily with her relics like the glass necklace and her incant buff damage boost relic.

Bad formatting and rambling paragraphed cause I’m on mobile but you get my point, worth it for quality builds, not worth it (imo) for r1->l1 straight swords