I have this one and the thing that sticks up pokes my wrist all day. I don't think a human tested it for any amount of time.
It's one of those things where you don't notice it until you do. When you do, it's a big problem.
What else do people use stands for? Surly it's not to elevate the screen to eye level and still type on it? That's just awkward.
I use this one: