I think j_windmiller92 is right. We poor Cingular users only have the option to send the Web Client Service Book from Cingular's BWC. But, I did take a look at my installed service books and I have both Cingular Browser and Blackberry Browser. Only the Cingular Browser icon on the screen, though.
If we keep this up we will eventually document Cingular's product offering for them! :->