I've been using this - with the leather carrying case - for nearly a year now. I bought it because it was difficult to keep track of my phone on the movie set I was working on. Every time I lay my phone down to do something on set (I had no pockets) someone moved my phone.. "That's not supposed to be on set!"
Since I got this my phone has not been misplaced. Two reasons for this: 1) Movie people respect cameras far more than they respect phones, and this really looks like a camera, and 2) with the handy strap, I could wear my phone around my neck or over a shoulder so I didn't need to lay it down so much to free my hands.
Now that the movie is over, it still fools people everywhere I go. It's a rare day that I don't have a conversation with a stranger about my "cool camera." Sometimes I tell them, sometimes I don't, but it always makes my day more interesting. If you don't like to talk to strangers, this is not the case for you!
Some reviews have said it's not very sturdy, but what I have found is that the part covering and protecting the phone is quite sturdy. Over the course of the year the top part that holds the case on (very securely) becomes looser. I haven't had a problem with it coming off when I don't want it to, but it's easier to take it off now than it was when the case was new.
The only downside for me has been the lens attachment, which has also gotten looser over the last couple of months. I realize it's only a matter of time before I lose the lens somewhere. It came with a second flatter lens, so if that happens, I guess I'll just be reverting to that.
And - when I've worn it out - I WILL buy another like it.