Swagelock has had such a wrench for ... at least a couple of decades. It's not clear how well it would work for heavy torque, but it's a nice item for brass compression fittings. I can't find it in their current catalogue, though. The principle is to use springloaded teeth so they bear the force in CW rotation, retract into a well in CCW rotation. Flip the wrench over to unscrew the joint. I recall cylindrical teeth, axis parallel to the pipeline, sliding on their circular end surfaces.