Personally I don't see the point in it - that said - I also can't see the vehicle or what has been done to it. Steering stabilizers are often added as a "band aid" fix to other perhaps misunderstood issues, like bump steer or 'wobble of death" that may be the result of poorly thought out lifts. He might have needed mode damping that one stabilizer could provide.
Tell us more about the Samurai, maybe post a few pictures, there's certainly no need for two stabilizers on a stock Samurai.