I believe it is substiantally thinner and lighter. K cut from the factory is also a nice clean way to integrate an RDS.
That's how I would roll, but I generally dislike DA/SA guns with safeties from a fear I might accidentally activate the safety while carrying. The likelihood of that happening varies greatly by the design of the safety.
How would you describe the DA+? The guys from their company seem to be unable to describe it succinctly. I am thinking it is a DA pull length with SA weight, like an LEM?