I am typing this on the beautifully designed and well-crafted Skinny Slim Keyboard case for the iPad 2, from Hatch & Co. ($90 at http://www.HatchnCo.com) Unlike most bluetooth keyboard and case combinations, the Skinny is sleek, svelte, and is almost as slim as traditional folio cases that lack a keyboard. This is possible because the keyboard is a membrane style, with almost no height to the keys whatsoever, just a slight raised outline for each key.
There are assorted specialized keys for iOS functionality like volume, home, rewind, play, etc. There are also arrow keys to move the cursor which is very useful for word processing. A nice touch is the built-in magnets to act as a smart cover, putting the iPad 2 to sleep or waking it up, automatically.
By default, there is a keyboard click for every key, but there is a dedicated key labeled 'buzzer' that toggles on or off the sound. Because of the keyboard's membrane style, the slightest touch will register as a keystroke, making touch typing impractical.
The leather is very supple, and available in either cream with light brown accents or black with gray accents. Keep in mind that the iPad isn't totally enclosed, so the degree of protection might not be sufficient for some users but the style factor might win the day when deciding if the Skinny is right for you! If you are a lumberjack, look elsewhere, but if you are an executive, fashionista, or wedding planner, this might be your case!