Yep. I have been rocking the clear case included in the box right out of the store during the initial setup. I just ordered a Dbrand skin (red) to see if that helps with gripping the phone then I'll use the clear case on a case by case basis and not all the time. The case feels great though.
I wouldn't worry about it. With my 6T, I was super angry because the screen got a scratch on it in less than two weeks. I was going to Tweet up a storm. And then I realized the 6T came with a screen protector installed.