If you're looking for something a bit different than the usual messenger bag options out there, COTE et CIEL's Laptop Messenger ($155) should do the trick with a unique melange-encased pouch design. Link
SDRTraveller rethinks the messenger bag in Expedition Grade Dyneema
The bag is half the weight of standard messenger bags.
Want Les Esssentiels adds an elegant touch to the messenger bag
A sharp messenger for the sharp dressed man.