I renewed my TX DL before it expired, and they gave me a paper temporary, but I did not get the new one in the mail before I flew for Thanksgiving. The TSA screener looked at me, and I said, yes, I know, I have a paper one if you want it. He said he couldn't care less and sent me on my way.
On my return the screener pointed it out to me, sort of in case I didn't know, but accepted the expired license.
Come to think of it, the only time I had to show the paper one was when I rented a car.