I like the case mainly because it seems more advanced compared to other cases. The fact that it shows battery status on screen is cool, the internal antenna is cool too. I ordered one and am waiting for it to arrive this Monday. The hump looks out of place but I haven't seen it in person to judge.
Currently I roll around with a Trianium battery case most days for my 6S. Especially if I'm at work, I work about 13hrs a day, 3 days a week. I don't like sitting my phone on a charger because I'm hardly in one spot.
If I forget to charge my phone and case before work, I know I'm screwed somewhat. Thankfully I can just pop my Trianium case off my phone, let it charge on some random persons micro-usb charger and wait like 3-4 hrs for it to charge halfway. By that time my iPhone is hanging on for its dear life. I pop the battery case on, it charges almost fully and I keep moving through the day.
But then I read this post on Daring Fireball:
http://daringfireball.net/2015/12/the_curious_case_of_the_curious_case
"If you find yourself short on battery with your iPhone every day (or even most days), and you can’t make an adjustment to, say, put a charging dock on your desk or in your car to give your iPhone’s internal battery a periodic snack, then you should probably bite the bullet and switch to a 6S Plus. However bulky the Plus feels in your pocket and hands, it feels
less bulky to me than the iPhone 6S with
any battery pack. An iPhone 6S Plus, even with a normal case on it, weighs noticeably less than an iPhone 6S with the Smart Battery Case. If you need the extra battery capacity every day, you might as well get the Plus. (If you actually prefer the bigger Plus to the 4.7-inch devices, you’re in luck — you get the screen size you prefer,
and a significantly longer-lasting battery. My advice here is for those who prefer the 4.7-inch size, other considerations aside.)"-John Gruber----
This made me really rethink things. Why am I walking around with battery cases when an iPhone 6S Plus has probably enough battery power for my needs?
It makes way more sense to just "bite the bullet" and spend $100 bucks for the 6S Plus vs $100 bucks for a battery case that doesn't have an on and off feature. Also, continuously charging my iPhone doesn't seem really smart to me because wouldn't my phone be warm all the time? The bulge in my pocket is another concern. I like my jeans a little snug.
I already posted my iPhone 6S for sale. Still want to see the case for myself before I return it.