GamesIndustry.biz has yet another story about the revelation of the Revolution controller at TGS, wherein they mention that Iwata presented several Japanese developers for their comments.
Specifically quoted is Konami's Hideo Kojima of Metal Gear fame, who said his initial reaction was the exclamation "You've done it!"
Kojima went on in detail: "Even though it was a surprise to me at first, I quickly understood how it should be used. This is exactly what I was looking for."
Source: TGS: Nintendo reveals one-handed controller for Revolution (GamesIndustry.biz)