Free bump - texted seller and he sent me some good pics of this. To answer my above questions: it's not ceramic coated and has the single-wall tips. Looks to be in good condition from what he sent me though. (I'm holding out for dual-walled tips) GLWS OP!
Just a girl and her 837 ponies...
2013 Santorini M3
2012 A4 Avant (winter beater)
199x Sapphire M3 (because racecar)