Has anyone tried the chinese series? I plan on finding something that I can wear long term, rather than about security. The cheapest one thas has been sold that I can see on the net with a rear opening is this one Feedback doesn't show much about it other than that it includes silicone lining for the wires, which is helpful. My concerns about it are: -Does the wire cause any long term pain (with/without the lining) -Does the weird configuration of the waist plates cause any back pain or the alike? -Does the butt hole tubes have a tendancy to twist? (e.g. one bar goes down, one bar goes up with prolongued wearing, my body isn't symmetrical) -Any tailbone area skin problems? -What grade of stainless steel is it? Does it cause nickel allergies? (I noticed I had nickel allergies on the rear locking plate of the cheapo rigid type (~45 usd or less if you know where to look) but I was fine with the stainless steel parts of the belt. The central locking hourglass-shaped "pin" that stuck out was basically just regular iron-carbon alloy with nickle coating, although the rest of the rear back plating seemed to be some form of stainless steel. It however nevertheless still rusted out and caused nickle medical damage to my skin that would last about a week or two. I evenetually solved the problem with the rear plate by taping it since it was pretty rectangular and easy to tape over.