Dual wielding is stupid?
I could see it as a high level perk, which would be awesome.
Dual wielding in general isn't stupid. It's a perfectly reasonable method of fighting, though you would usually use a smaller weapon in the off-hand than the main hand.
I don' t think dual-wielding Claymores is reasonable regardless of strength; it's not only a matter of strength as it is a matter of strength and mass. Maybe if you're a very, very strong, large-handed, obese Orc.