IMHO, Looks like a PIA to me. When you need to intonate, loosen front and rear allen screws and now the entire saddle block is flopping around, front to back, side to side, potentially throwing string spacing out. Not to mention you have to take all tension off the string to intonate; it's gonna take a lot of futzing to get it right. Many other simple designs that achieve the same effects as this machine.
You may believe differently.
Immigrant says: "Some fuzz be coo', some fuzz be trippin'."