Recently got the 7D (from a non-live view 30D) and went to a piano concert where I had special and unique permission (from my friend - the one playing!), to shoot.
But even with permission, Live View was FAN-BLOODY-TASTIC!
Flicked onto silent mode-2, put the body under the chair and switched on Live View; up with the camera and fired away, putting the camera behind me just before lifting my finger off the shutter release button and even in the silent sections, nobody could hear a thing!
Excellent system, given a little bit of extra thought so as to be (as good as) 100% silent.
There's NO WAY I could've shot with my 30D under such noise-strict conditions.
Shot from the back of the concert hall with the 100-400L, Live View, 7D...and processed in LR3 and the GIMP.
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