The problem is that under serious torque, you want to secure the BB tool to the bottom bracket by threading a bolt through the tool into the BB spindle to hold it in place. The FSA only has the 1/2" driver hole plus some weirdo hole in the side of the thing, no wrench flats. So once you've secured the tool it's pretty much impossible to attach a lever in such a way to as to be able to turn the damn thing with the necessary force.

Complete trash, I'm afraid.