The part is simply pushed onto the belt - without having to draw it from the loop - I like that.
The part is solid and stable - it feels tidy and well finished - I like that.
The part is a very good complement to the strap - I like that.
But what has almost made me give the whole thing with only one star is the price - of not really like it. In my opinion (but I let myself be happy to convince you otherwise) should probably be five to eight euros more than adequate. To give Twenty euros in favor of that is clearly exaggerated for a piece of plastic with a plastic ball and a piece of rubber band in my opinion.