It's all part of the interview process. Think about it: they know as soon as they run your plates who the owner is, whether the vehicle is registered, whether the owner has a valid license, etc, etc. once they get your license(assuming you are the registered owner or family member) they pretty much know everything they need to.If they already know, what's the point of handing your permit card to them along with your DL?
Everything else is designed to allow them to determine whether you are a bad guy and just how bad they want to make your day, if at all.
Just one more reason not to greet the officer with, 'what the **** do you want?'
Also, we love our papers. Once the cop has your papers, you aren't leaving. IIRC, you are required to have your LTC on your person when carrying. Natural law is awesome, especially with a permit.