Inscribable signature frame

claudinedejoie

Hi,
Has anyone seen or used one of these inscribably signature frames: http://www.weddingwarehouse.us/index.php?p=product&id=1328&parent=67

Are they that much nicer than a mat you can write on? Do guests have a hard time using the instrument?

Any advice to let me know if it is worth the price would be great!
thanks