Any direct light that hits the paint causes the pearl to be very evident and it looks superb.
(Caution: Big Photos)
At walkaround distance the pearl is very metallic.
http://i.imgur.com/Jj0BY.jpg
http://i.imgur.com/CuCob.jpg
Further away it becomes more of a lustrous sheen that flat whites don't have.
http://i.imgur.com/M4LoA.jpg
http://i.imgur.com/cHZgF.jpg
This color gives you the benefits of normal white in allowing you to see the car's shape easily, but unlike flat whites it allows light to play across the surface and contours and actually give you variance in the color. It is more interesting than flat white in bright light which has a tendency to blow out.
Though this color really does demand you keep the paint in good shape. Thank goodness I got to my car's paint before the dealer did, so they never managed to do anything to it other than peel the tape off. The Subaru dealer I originally ordered my BRZ from absolutely butchered the paint on their brand new BRZ's. When clean and swirl free it really is a great color.