I used the Zone System for years for 4x5 and 8x10 work, even some 6x6 work. Once you get it down, it doesn't take long per shot. Meter three or four things, or just look hard at the scene and meter one. With a glance you'll know if it needs N, or N-1, or N+1 development. If it needs something more extreme, it might take a little longer, but the exposure planning for a shot takes less than a minute, usually. It takes far longer to set up the camera and tripod, and to focus. And once you've got the basic exposure for a series, it's easy and quick to modify it if the light changes. If the light deosn't change, you can use that exposure over and over again.
Today's cameras are a lot faster, but we got pretty darned good results before run and gun became fashionable.