I used Hasselblad multishot cameras for fine art repro and table top photography. With the Blad and Sinar multishot setups, the camera must be tethered to a computer. Depending on the setup, it sometimes takes around a minute to capture all of the images.
Multishot files have a few notable advantages: no Bayer pattern interpolation, better micro-contrast, and more accurate color rendering.
Multishot is not just about resolution. Heck, I wish the new Oly would have a feature allowing a 4-shot mode for 16mp files.