« on: October 03, 2013, 08:43:39 AM »
For a shoulder bag I've used the ThinkTank Speed Racer V2 (smaller versions are Speed Demon/Speed Freak). It's padded (but bigger and squarer than a messenger bag) but what I really like about these bags is that they come with a padded waist strap so if you want to lug a lot of gear then you can fold out the waist strap (normally tucked into pockets) and put it on to take most of the load off of your shoulder strap (so it doesn't dig in). The waist strap also stabilizes the bag when walking, climibing, etc. so you don't have to worry about it sliding off of your shoulder and falling to the ground. They also come with a rain cover tucked in as well.
For a seven day trip in Southern California (including walking around theme parks for days with the kids) I carried a 5D3 with 24-70 F/2.8L mounted (sometimes in the bag while getting around outside the park), 16-35 F/2.8 II, 24 mm F/1.4 II, 70-200 F/2.8 OS, 1.4x converter and a 7D body inside the bag. On the pouches outside I had a 600EX-RT plus spare cards, batteries and lens hoods. Loaded up it was a bit over 20 pounds but I survived the trip.