I'm not one who advocates chock-filling bags with gear, where the individual pieces in the bag are stacked and not independently and easily accessible at once. After all, once you've decided to head out with that panoply of gear, it's all about the lens swapping isn't it? Or does it satisfy just to have it all with you while maintaining the one mounted lens that you left the house with; so that the other lenses just enjoyed a day out and about while sitting in the bag? Kind of like the SUV that's never left dry, level ground; it's reassuring just having the capability to ford a stream or ascend a steep hill. So it is with having a marvelous range at your disposal. Those times that I have swapped lenses while standing with a stacked bag on my shoulder came with some fumbling that, luckily, has not led to a dropped lens onto hard city streets. Add to that the instances of screwing a filter onto a lens as yet to be mounted. Or the frenzy that follows after having deposited a nice, solid thumb print on a lens surface. These juggling activities become a high-wire act. In sometimes cold and windy conditions. And it's always in a hurry. So there is an uneasiness that bolsters laziness to accept the less than ideal framing or point of view, leading to missed opportunities. In my personal view, a bag with stacked lenses is for when you reach a destination that is sufficiently safe and that allows you to partially empty the bag of gear and have it out on a table so that you can swap to your heart's content. Event shooting comes to mind. While the Hadley Pro can accommodate a full-size un-gripped DLSR with mounted lens; plus an extra lens and flash unit; it can accommodate more gear than that in the Micro 4/3 range. For those curious about the Billingham Hadley Pro and what it can contain in Micro 4/3 gear, the following illustrates.