if you hold the stylus slightly bent to scratch the edge of the display. Directly at the 8th sentence I've written with the stylus on my just 2 weeks old, iPad mini, I caught me a nice scratch ... That just can not be that one can not even so bent (such as a ballpoint pen) write without getting so an expensive device like an iPad broken!
That did not happen to me with the cheap Stylus of Mumbi! Unfortunately this is not so "smooth" on the screen of the iPad.
The attached Mounted picture was taken with a blank page in "Good Notes", so as to capture the scratch. Very annoying!