I have an older P229 that's a SA/DA.
The SAFETY is in the trigger, same idea as Glock but, in my opinioin, a better engineered solution of course I am biased.
The first 1/8" or so of the trigger pull "completes" the firing pin assembly internally. So in essence finger-off = safety-on .... the safety is "off" ONLY when your finger is on the trigger.
In theory (I only say this becuase I have not personally tested this) the gun could be cocked with one in the pipe and you could drop it on the ground and it CANNOT fire.