If anyone is interested in the option of having the efis hsi display at the bottom of the display please go to this forum link and express your interest, if there is enough replies sounds like they may consider it as a software option in display configuration.
http://www.advanced-flight-systems.com/forum/threads/1504-5600-display-button?p=6827#post6827
http://www.advanced-flight-systems.com/forum/threads/1504-5600-display-button?p=6827#post6827