I recently added a bunch of these to my cp - here are my observations on the installation;
The GGG switches have a smaller body than a standard micro and they don't fit as tight on the button mounts. I don't see them breaking loose, but there can be some movement in the mount when you press the button.
You can't install them quite the same way as a standard micro (like a cherry). With a standard switch, I place the switch in a vertical position on the lower mount pin and then rotate the switch down until the upper mount pin snaps into place. With the GGG switches, the metal leaf snags on the plunger leg when you try to use this method. But because the switch has a smaller body, you can angle (twist) it into place.
One last note, the GGG switches have spade connections that are even smaller than .187.
Overall I'm impressed (as always) with the quality of the GGG product.