Here's the list of candidates. Killspencer is leading in the looks department and might be the direction I go in, assuming the durability and functionality match:

Briggs and Riley Verb Messenger
Timbuk2
Rickshaw Commuter 2.0/Slim
Tom Binh Zephr/ID
Tenba Messenger
Cote et Ciel Messenger
STM Scout/Velo
Mulholland Canvas
Korchmar Adventure
J. Fold Substation
ReLoad Waxed Canvas
Mission Workshop
Waterfield Cargo
Jack Spade Haversack
Mandarina Duck
Killspencer
Defy bags
Knomo
Millican Stewart