I have a few pictures of myself with this setup. I will post them in the morning when I get on my other system.
When i'm working, especially on construction sites, I use the Steroid Speed Belt, R U Thirsty, Large Drop In, Speed Changer, and a skin strobe. Occasionally I use the shoulder harness too if im fully loaded. I take only what I need, so sometimes I use it all, sometimes just a piece or two. I carry the camera in a UD bag or one of their holsters and then just "suit up" when im ready to shoot and leave the bag in the car.
I like the steroid belt for its better support when fully loaded. Having a 580ex in the holder, a water bottle, 24-105 in the drop in, a 15mm fisheye in the Changer, batteries, cellphone, etc...in the changer, Rapid Black Strap with a 5D and 70-200 and a pano-tripod...the belt setup is WAY better than a bag. I barely notice the weight. If I load that into a UD40 bag or similar, its very annoying to carry.
I'm 5' 9 and pretty lean as well. Its nice to have everything easily accessible quickly while shooting. Its nice to be able to bend down low without anything touching the ground. (especially if you are around dirt, mud, water or snow!) Its nice to be able to spin the belt around and redistribute the load instead of one shoulder being lopsided or a backpack full of inaccessible stuff!