The "Faith Attuned" +20% Damage dealt as raw effect is only applying to the main hand, it should be applying to both fists. I can upload a screenshot or save but guessing it's easy to reproduce. 

Hi, Fleetfoot. We're looking into this and will send the issue to our programmers as soon as we get the issue entered. Thank you for your help.

Greetings FleetFeet,

 

Would it be possible for you to send us a screen-shot of the damage output while holding [shift-Key]?

 

Cheers.

I previously reported the issue here with pics
https://forums.obsidian.net/topic/106966-40-beta-priest-of-woedica-fist-summoned-weapon-miscalculating-damage/?do=findComment&comment=2119032