Contemporary requiremnets of the building industry call for many types of drawings. A final presentation drawing may have been proceded by dozens of quick sketches that are never seen by the public. Many renderings are for communication use only rather than for display or publication. Other are concerned with telling stories directly and simple suggestion, through quick sketches rather than by painstaking detailing.
In an age of specialization, it is unlikely that any single artist could be proficient in all the wide variety of subjects and techniques included in the field of architectural illustration.