The X10's optical viewfinder is nice and large, but it's a traditional point-and-shoot OVF, not the great hybrid VF that the X100 uses. The camera operates with fairly typical menu assignments and button layout, though I'd never have guessed that the AE button was for metering and had to find it in the manual.
Like the G12 and P7100, the X10 has an exposure compensation dial. The mode dial has the usual array of auto, manual and semimanual shooting modes, plus two custom settings slots; movie mode; a scene program mode with the typical set of choices; an "Advanced" shooting mode with Pro Low-Light, Pro Focus and Motion Panorama 360; and EXR resolution priority, high ISO and low noise, and D-Range priority modes. My one gripe: the function button is quite tiny.