I have to wonder how the metal at the top works with exposed skin that may come into contact with it when sitting or bending over. I would be concerned that there could be irritation.
I just received mine, and i have to say, for the price this may have solved many of the issues with previous low cost designs. There are no worries about bending over...I've been wearing for over 2 days so far, working the line in a commercial kitchen. No irritation whatsoever.
The only issue I had was with the lock...it's a bit loose, so it did make some noise. That was easily fixed with a piece of tape around the barrel to make it fit snugly. Other than that, I think it's pretty solid...no movement at all between ring and cage. And like others said, for the price, it can't be beat!