About shutter lag, as I mention in all my reviews I am always writing under the point of view of a fine art landscape photographer, and as such, working on a tripod and with no "action" to catch, a shutter lag around 150 ms is perfectly fine. Even if it was slightly longer, that would be of absolutely no consequence to me. More, I don't have the instruments to measure it properly and reliably, and therefore don't want to add unreliable data to a conversation. I am sure there will be more "technical" reviewers than me offering that information when they'll get the camera in their hands. Finally, leaf shutter lenses always "take longer" to take a shot than focal plane shutter cameras, that's just the nature of the beast.
Hope this helps, best regards
Vieri