Been thinking abut this since I saw Kris's packing photo on the weekend. I can't afford it at the moment but it sounds like the best way to go is with a huge bag with wheels to carry all your photo gear on a trip like the Lowe Pro (or like my Lowe Pro Computrekker if you can't stand wheels) that Derrick Story mentions and then a huge fanny pack (bum bag for you Brits :-) !) like the bag that Ken Rockwell uses so you can quickly access the photo gear you have brought for that day's photo shoot.
I didn’t bring my whole kit and I had a lot of stuff with me on this trip – I don’t need to go to the gym for a while now since I got a lot of weight training in Africa carrying my gear. I actually couldn’t get everything in the Tamrac Expedition 7, so my wife put the Sigma 10-20mm, the Epson P-2000 and the chargers in her camera bag.