Like are you envisioning a "I totally have a warrant but I don't have to give it to you" type situation? I think it's fairly unlikely, and you would likely be able to get the search ruled inadmissible if a cop tried it.
Improperly down voted comments typically even out in the end anyway.
The public must have the ability to easily verify police conduct is appropriate, and it must match the cadence of the police work.
Er, the warrant is still there to be examined later, no? It's just not necessarily shown to the subject at the time of investigation.
The warrant is the receipt. Even if you believe it's fine most of the time I'm pretty certain most people would feel uncomfortable if they went to the grocery store and weren't offered one. You throw it away most of the time, but have you never needed it? Mistakes happen.
The stakes are a lot higher here. The cost of mistakes are higher. The incentives for abuse are higher. The cost of abuse is lower.
And what's the downside of the person being searched having the warrant? Why does it need to be secret?
There may well be reasonable scenarios a majority of people would agree that providing a warrant isn't feasible, but that needs to be codified in law in more detail than whenever the judge deems it so.
And everyone should be skeptical enough of government power that they mentally switch out "can" with "will".