If you are needing grounding for rack equipment, grounding via the device ears to the rack is not usually a good bond. That and most people’s racks are not properly grounded anyway. Also note the Balance One has a plastic case, so any technical ground would have to be an internal mod and void the warranty.
Unless you are running ethernet between buildings, you are unlikely to suffer any damage through it. If you are going between buildings, use fiber.
For protecting equipment, the focus should be on proper power & grounding distribution in the building, and good quality power conditioning devices. Preferentially series-mode. If you use typical “surge protectors” with MOV’s in them, you are creating potential problems.