[Bananadine]

Swords longer than 2 do tend to be two-handed, yes. But maybe a god is big enough to carry a very large sword in one hand. It seems that this god uses two hands, but there are cases where such large weapons are seemingly used in one hand. I guess you can't really tell what will or won't get replaced until you try it.

I'm playing as Atlantis now, and I just tried giving a shield to a size-3 shambler whose hands are normally occupied by a glaive and a shield. Glaives are usually two-handed, but this unit's picture clearly shows it holding the glaive in one hand and a shield in the other. But when I put on the new shield (a weightless shield, even!), the shambler dropped both its glaive and its old shield, and switched to the fist weapon. So the game isn't even completely consistent in this regard.