This ipad holder comes with two fitting, one for attaching to a pole or stand, the other allows it to screw onto the top of a standard Mic stand. I use it on top of a stand, with a Uke hanger below, which allows me to keep all my kit very neatly together when out playing.
The ipad is held firmly, by undoing a screw on the back of the holder and sliding the ipad in, before closing it up and re-tightening. I have fitted an Ipad 1 and a 3 in it with no problem. The ipad rotates easily to landscape and portrait.
The only slight issue is that the corner holder is close to the headphone socket, so you need to use a fairly thin jack plug if you want to get audio out.
The plastic seems strong and has withstood a lot of moving about. I do not bother to take it of the stand when I move it, and I have had no problems yet.