The wearer always benefits from a 10% miss chance while in an area of dim light or darkness, even if she is perceived by a creature using darkvision. Other sensory abilities, such as blindsense or true seeing, bypass this effect entirely. Druchite-veined weapons grant their wielder a +2 circumstance bonus on attack rolls against creatures perceiving them with darkvision.
Shadow Blending (Su): Attacks against a fetchling in dim light have a 50% miss chance instead of the normal 20% miss chance. This ability does not grant total concealment; it just increases the miss chance.
Will fetchling with shadow blending have a 50% permanent miss chanse in dim light even against creatures with darkvision?
Against someone with Darkvision they would have a 10% miss chance.
Drucite doesn't turn the area area they are in to dim light for someone with darkvision, it just causes a 10% miss chance. That doesn't effect Shadow Blending at all.
Thanks!