One thing first: The bracket fits very well for the iPad (4th generation). The iPad can also be easily attached to the holder and released from it. The arm is without the iPad in the holder, although relatively rigid, but it can be moved well with iPad. The rotating and tilting the iPad works perfectly. One problem is described on the product images "S" position of the arm: In our model, the mount with a slumped down iPad always something and did not seem strong enough. You can solve the problem by another fixing the arm to the table clamp. However, this is not a satisfactory solution if you want to use the holder in many different positions.
About possible fatigue of the arm I can not say anything, since we use it for only a few days.
