Utility Series Latch II has a great design. You can use it with almost any other hard case other then the OtterBox. I gave an average quality due to the stitching on the optional carrying case. With it flopping around on the carabineers, it will rip off after awhile. OtterBox will replace it free, (and has done so already for me a few times), but its just a hassle to run thru. Great product other then that.
The project that I am currently on requires an extensive amount of electronic communication at all times. This includes email, punch list, and document referral. This Utility latch allows me the convenience of having the iPad with me at all times, but without the hassle of holding it. My only suggestion would be to face the screen away from the body when you carry it so you do not scratch the otterbox screen protector while you are walking. This may sound backwards, but I found the buttons on the back of my jeans were scratching the cover.
I bought this case to use with my Surface pro 3. It fits fine even though the case is for 10" tablets. The issue I have is to use the tablet in portrait mode it is uncomfortable. The spinning handle on the back will not turn far enough for a good feel. I "modified" it by making two cuts on the back so the handle will spin further.
Even with a very grippy OtterBox Defender Case (iPad Air case on a 5th Gen iPad) the edges don't give you much space to hold. If your thumb touches the screen, your touchscreen functions don't work correctly. The Latch II solves this problem by giving you a handle on back. It is very comfortable and rotates for portrait or landscape modes. The belt clip, accessory bag, and shoulder strap are icing on the cake.