They are nothing like normal chiclet keyboards.
I too hate chiclet keyboards. I hate laptop keyboards in general. But this keyboard is not as bad as I expected, and if anything, potentially better than the old ThinkPad keyboard.
First off, there is zero sway in the keys. They're typical ThinkPad stiff and sturdy. The travel is the right distance, so is the resistance of the keys. They're so tight that when I was swapping the Ctrl and Fn keys on my X120e, I felt that I was going to shatter them trying to get the keys off. They just wouldn't budge.
And the bigger reason I like these keyboards is, they have curvature, unlike every other chiclet I've ever used.
Most chiclets on PC laptops have zero curvature. Just completely flat, terrible. I can't find my way to the center of the keys, and it makes me furious when I start to typo because of it.
The recent MacBooks are 'okay', but they still don't have enough curvature. It's barely even noticeable, and I typo on MBP keyboards all the time.
You can see the amount of curvature in this picture: http://www.thinkpads.com/wp-content/uploads/2010/01/lenovo_t...
But I do recommend trying it out yourself. I'm still not sold on chiclet keyboards, but at least Lenovo didn't cheap out and make a crappy one.