> I don't understand how using the M11 with the mechanical, optical finder is any different in terms of shutter latency compared to the M10.
The Shutter starts out in the open position for metering to operate. It is always open, just as it is in liveview mode. Once you press the release, the shutter must close, make the exposure, open again. It's like a Kodak Retina Reflex. I prefer a IIIS over the Reflex-S. Leica could add a firmware mode to leave the shutter closed while using the optical viewfinder, but metering would be disabled. This would require new firmware.
The Shutter starts out in the open position for metering to operate. It is always open, just as it is in liveview mode. Once you press the release, the shutter must close, make the exposure, open again. It's like a Kodak Retina Reflex. I prefer a IIIS over the Reflex-S. Leica could add a firmware mode to leave the shutter closed while using the optical viewfinder, but metering would be disabled. This would require new firmware.