There exists some cases (looking at you tanks) where the crafted accesories are absolutely better then the tome ones.
Normally main stats outweight substats in case of Ninja Dexterity. What you could always do is go to the Ariyala Website and make 2 builds, one with crafted accesories and one with Mendacity and then compare.
Myself i have a mix of Mendacity and Diamond which is bis, but in case you do not raid crafted should be fine.