The wall duster reminds me of the mops from long ago.  It does a nice job, and I like how it cleans further up the baseboard even without purposely running it up the wall.  What I DON'T like about it is the actual handle which I also wrote a negative review on the same spray mop handle.  E-Cloth handles do not pivot, but they NEED to.  I am forever retrieving dust, dirt, and crumbs because the handle keeps the mop stiff and doesn't allow it to swivel following a good "S-cleaning pattern" on the floor containing as much dirt as possible.  That truly is the most frustrating thing for cleaning.  You never want to clean and then have to retrieve the same pile you already thought you picked up--over and over.