Johnny Grip is not a coating. Unlike non-slip coatings, which can be complicated to use, requiring mixing and sanding, and can be difficult to apply, Johnny Grip is a slip resistant treatment that microscopically etches the surface of the tile, increasing the slip resistance of the tile when wet.
Non-slip coatings can leave a sharp, abrasive surface, can alter the appearance of a surface, require rooms to go unused for a time, and they can have limited wear. Johnny Grip works on a microscopic level so it doesn't leave an abrasive surface. It won't alter the appearance of the treated surface - it's invisible! and floors treated with Johnny Grip are available for immediate use after application.