i dont think the button going to be difficult to press/handle. just like w900i.

large space in between each keys prevent you from accidentally pressed the adjacent button (common in keypad where buttons are connected to each other).

if only the keypad gives good feedback and soft enough, like w880i. at least unlike bar shape w880i keypad, this won't easily cause sore thumb after long usage maybe.

I am really interested in the button-type actually. I believe it would be comfortable and nice to use. But then the color and design put me off.