Parallel Development
Since the capital forms of the display face are essentially reworked versions of the captials of the sans face, there was little worry about disparity between the two styles. Making a lowercase for the strong uppercase of the display version, however, was another story.

Several failed lowercases were developed while making the display caps. This picture is a screen grab from the metrics window of Fontlab showing the sans and display versions side by side. In the end, alternate caps were included for the display version instead of a mediocre lowercase.