I have never heard it referred to as DAO ETS, but the "special" DAO trigger is called the LEM trigger (at least on my P2000 it is). The LEM trigger is DAO, with no decocker. It has a "pre-cocked" hammer and an extremely light, consistently smooth double action trigger pull. You get the ease of a single action trigger with the deliberate, long trigger pull of a double action. I may be mistaken, but I don't think that LEM USPs come with a safety, if that is something that concerns you.
If you really wanted a V1, then you should get your money back or make sure that the pistol is a V1 before taking posession of it.
I think the LEM is slightly more expensive than the V1, so i find it hard to believe that they would advertise it as a V1 and then give you an LEM.
Each has its own advantages and disadvantages. I would use the LEM for CCW if my state weren't run by Communists, but the V1 SA/DA has its place as well.
My first pistol was a V1 USP 9MM, and I thoroughly enjoy it.
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