I have the riamondi too. Good but has limitations. If using rapid set, the spacer will set in the adhesive, then can only push down with the wedge. They are strong too, unlike the lash clips from tops, which you will need a metre deep bed to accomadation the curled up ends. I have only used hem on marble floors where you can justify them ( nearly).
still nothing better than a straight edge, a flat for checking lippage, a good toutch and a pair of eyes!