szekiat and vrgard have it right, IMO. I don't like meter readouts in my finder, but I would deal with it to get aperture priority. Other than that, what's the point? A good hand-held incident meter is much more accurate than an averaging reflective meter in camera- and it's faster for me. I take a few readings, establish in my head the light levels for highlight and shadow, then put the meter away and shoot. I can adjust much faster depending upon what I'm seeing, and concentrate on my subject- not meter diodes, which I find distracting and generally not helpful.
With a bit of experience, hand-held metering is more accurate and becomes faster than in-camera meter in manual mode. Now, aperture priority metering modes are nice, too, and having that feature is the only way I would be interested in using an in-camera meter.