So far it works very well for my purposes. I can use it to prop up my music books when I'm practicing my uke. I can also use it to prop up notebooks and documents when I'm transcribing text. It is light and portable enough that I could take it everywhere I go.
It's not a bad copyholder but if it were wider both sides of the book could fit on the holder. As it is now one side of an open book hangs off the edge. It also slides around a bit; wish it had some gripper type of stops on the part that rests on the desk.
It is a great product. I've used it eavryday since I acquired it. It has made my eavry day reading more pleasent. I'm thinking on giving one as a goft to my wife since she also is a reader.