The mirror slap on the H3DII is nearly silent.
My question is more about the experiential nature of the new shutter delay; not the audio sound that it makes. I'm not sure I can visualize the number quoted here. Surely it's not anything like the delay on a bad point-and-shoot, where you can clearly feel a delay between when you press the shutter release and when the shutter actually fires?
I've never understood this shutter delay solution -- to me, it's not about delaying the shutter, it would seem to be somehow REDUCING the physical shake.
I can remember testing my old H1 with Phase back, and even on the tripod, (a damn good tripod), I was seeing soft vibration images even at 1/60th and 1/125th, when shooting portaits with available light. You could clearly see the double-image, motion-image in the eyelashes. To me, that camera was destined to be either mirror-lockup, or a strobe-only camera.
When I would shoot with it, even on my large tripod with giant RRS head, you could feel the camera "lunge" in your hand when you shot it.