>Are you judging the shutter speed by the sound or the actual >shutter speed shown in the EXIF data of images? When you >press the shutter release to make an exposure in Live View, >the mirror must go down, then back up along with the shutter >opening and closing. All this makes for a longer >"sound" when in Live View. The actual shutter speed >is the same.
So, in terms of vibration reduction, there's no advantage to shooting in Live View?