The Shadow trigger is DA/SA.
The Shadow has an ambidextrous safety.
The Shadow does not have the firing pin block mechanism which in the "B" configured CZs is a device which intercepts the firing pin axis and is located vertically within the slide's breechblock. With this pin block, the trigger has a bit more work to do (it needs to compress a small spring to lift the blocking piece away from the path of the pin), so this increases the pull weight your finger experiences.
The Shadow's trigger does not need to do this extra work, which lightens the pull weight. By how much, I don't know.
Whether the lack of a firing pin block makes the Shadow less 'safe' in case it is dropped, that's up for discussion.