Old post, but wrong. If your opponent activates an effect to destroy one of your "Six Samurai" monsters and you use the effect of the "Six Samurai" monster to destroy your "Grandmaster of the Six Samurai", "Grandmaster of the Six Samurai's" effect doesn't activate because it was destroyed by your "Six Samurai" monster and not by your opponent's card effect.
Other Combos:
Book of Moon + The Six Samurai - Irou
The Six Samurai - Zanji + Mist Body