Did some research looking for an over the shoulder bag... wanted an overall slim bag/case that could also accommodate my charger and other accessories when I need them (not always), as well as some papers, etc... wound up narrowing my options to these three. Pulled the trigger on the Booq bag due to how slim it is, but with the ability to expand when I need the extra storage space. Thought I'd drop my list here for anyone who's interested.
booq Taipan superslim 13 ($70)
http://www.booqbags.com/us/briefs/taipan-superslim/TSS13-BLK
http://www.amazon.com/Booq-TSS13-BLK-Taipan-superslim-black/dp/B00IAVDHKQ
Thule 13 Stravan Deluxe Attache ($80)
http://store.apple.com/us/product/H...e-attache-for-macbook-promacbook-air?fnode=50
inCASE 13 City Collection Briefcase ($70)
http://store.apple.com/us/product/H...collection-briefcase-for-macbook-pro?fnode=50
booq Taipan superslim 13 ($70)
http://www.booqbags.com/us/briefs/taipan-superslim/TSS13-BLK
http://www.amazon.com/Booq-TSS13-BLK-Taipan-superslim-black/dp/B00IAVDHKQ
Thule 13 Stravan Deluxe Attache ($80)
http://store.apple.com/us/product/H...e-attache-for-macbook-promacbook-air?fnode=50
inCASE 13 City Collection Briefcase ($70)
http://store.apple.com/us/product/H...collection-briefcase-for-macbook-pro?fnode=50