I probably do more shoulder-hoisting than bag-stuffing. My camera is a Horseman LE, and my "bag" is a Calumet trunk, which is heavy and bulky. I could likely get away with a simple luggage cart for it, since I spend most of my time in urban settings, but, well, <mumble, mumble>.
A decent amount of the time, I'll scout a location with only a framing card and spot meter, to figure out what I'm in for. Then I'll go back to the car, load up with what I need - cam with lens on the 'pod, over the right shoulder, with a small camera bag for holders, notebook, meter, etc. over the left - and go. Some in this thread say that they shoulder-hoist with the darkcloth over the camera; I fold it a few times and put it on shoulder under the tripod, for a (very) little padding.
Carrying the LF gear like that is more fun, I think, than just a bag, because of all the "What's that crazy guy doing?" looks. The smiles and the "trying not to stare" averted eyes, it's almost like I've got my pet elephant with me... which, in a way, I do.