User blog comment:MisterRandom2/Can an Angel Blade kill a demon?/@comment-87.112.38.134-20120902190524

Considering that the blades are standard-issue to angels, it'd be a bit stupid if they could only kill angels. Seeing as demons could be classed as the primary foes of angels, it only makes sense that the angels would be equipped with the means to kill them, should the smiting not work for any one of many reasons.