Blacksmith building lvl affects perks?

Does anyone know if the lvl of the blacksmith building has any affect on perk boost levels? Or does it only lower pearl conversion time?

 

 

 

Just debating whether to upgrade blacksmith, but I really only use him to uber items. So I don’t want to waste a worker if it will have no affect.

 

Thanks in advance for the feedback!

http://forums.flaregames.com/topic/7278-version-195-the-blacksmith-discussions/?p=51359