Well, in Batman: Shadow of the Bat, #17 THE GOD OF FEAR (1993) , Scarecrow did disguise several teenagers as scarecrows before sending them across Gotham to do his bidding and draw the heat off him, so technically yes.
But historically, that was never really his method, so if you want my opinion, make his henchmen's outfits or uniforms slightly different than their boss's costume.