shuggoth's page

And Arcane heritage adds +4 to sorcerer level for use of bloodline powers so you get +2 to eldritch heritage powers

It's boosting two separate smite abilities. I would agree with you if they were both smite evil but it is smite evil and smite chaos from two different classes.

Robe of Arcane Heritage will work with both a normal sorcerer bloodline and one acquired through eldritch heritage. We are not talking huge amounts here, in the case I through up it amounts to an extra 4 damage most times and rarely it could amount to 8

The smites come from different classes.

The main argument is the GM is claiming the bracers can only boost one smite at a time so having both activated are effectively a level 14 smite instead of an effective level 18 smite.

One player has a paladin 6/ hellknight commander 4 wearing the bracers. If they are facing a chaotic evil creature and activate both smites, what level would it count? I say level 10 smite evil and level 8 smite chaos but others are arguing that it should be a level 14 smite.