I really like this binder: It looks great and having the ability to fit top-loaders into a binder is awesome.
With the slots being filled from both sides, it does make it harder to remove the top loader once in, so that's just something to be cautious of when trying to remove anything. If there's a suggestion I could give for future improvements, would be to improve the whole zipper part (make the material running along it thicker and so that it fully encloses the folder).
But using the Gemloader branded sleeves and top loaders with this folder, it really does look cool.