That's me.The case itself is 3.6oz, which translated to almost 1/4 pound. My wife had one and the battery life was good but she couldn't get over the weight and girth. She got it because she forgets to charge some days and it effectively doubled her battery life. She opted for a thin clear case and trying harder to remember to charge lol.
I don't suspect you'll really significantly reduce either. The plus is pretty heavy. I notice this after picking up a 6s every time.I actually have a smart battery case that I like. I was wondering if I would loose substantial battery life and weight by switching to a 6 plus?