There is a Alternate Trait available for Half-Orcs called Warded Skin:
Warded Skin (from the Jungle): Half-orcs from jungles are often protected by elaborate tattoos that redirect demonic magic. Jungle half-orcs with this racial trait gain spell resistance against divine magic equal to 6 + their level. Additionally, divine spells cast on them by demon worshipers have a 10% chance of failure. This racial trait replaces the orc ferocity racial trait.
There is a Racial Trait from the Traits page called: Auspicious Tattoo You bear a tattoo depicting one of the totems listed for your tribe that favors you with good fortune.
My question is: Should't the Half-Orc Warded Skin trait include the effects of Auspicious Tattoo?