I installed this on my plate carrier but haven't had a chance to field test it. Will update once field tested.
Ultra light; plenty of Velcro, solid construction
Doesn't appear to be a way to tighten folding tension; mounting strap is flimsy Velcro; hinge extends into magazines; rubber retention tight but in my experience eventually deteriorates and fails. A Kevlar cable with adjustable tension might work better.
I am overall pleased with the product however I wish there was more pictures of it being mounted and utilized with different types of cell phones in cases. I used an iPhone 8 plus in a OtterBox symmetry case. It works pretty well while I’m at work. Unfortunately the camera hole cut outs do not line up with my phone. once the phone is installed it is very solid and I have no fear of it coming out.
This is a solid little piece of gear to have at a nice price point. I was a little concerned at first with the retention system used to hold whatever device you choose to use in place but the bands and Velcro retention work well enough to keep the device secured while you are using it and the over the top Velcro closure to secure the device in a closed position when not in use further prevents any chance of loosing the device. Having the cutouts for device cameras is another plus, so you can essentially use this as a kind of body cam if you want to record training drills or something. All in all I'd highly recommend it if you just want to give the nav board type equipment a shot and see if it works for you before investing $300 or so in a more expensive unit.