>>281278748Think of the presentation of it. What if your opponent's mecha-soul-gems were torso-mounted. They'd look like nipples! Everyone would point and laugh and no one would fight! Why, you'd feel so embarrassed for him that you would hardly be able to retain proper sword form! It isn't fun at all, and it is sordid to do so in other ways. No one wants the gem-breasts. Thusly, gem-hand.