It's been about a month since I purchased Apple's highly-polarizing Smart Battery Case for the iPhone 6s. During this period of time, I've been using the case almost non-stop. I did remove the Smart Battery Case for a few days during the past month to see what life was like without the extra battery life, but I was happy to return to it not long after my experiment.
Most, if not all, of my initial impressions still hold up a month later. The Smart Battery Case might not be the best looking design to come out of Cupertino, but in real world usage, this thing is a winner.