In the following thread:
http://www.calendarscript.com/support/forum/Forum4/HTML/000342.html there is discussion of showing only weekdays in the calendar. The solution in the last message works to limit the number of days shown, but requires that the calendar.pl file be edited. This effects all of the calendars created with CalendarScript.
I have used this method to eliminate Sundays on the calendar at Gavit Sports (http://www.gavitsports.org).
My suggestion is to include this in the calendar settings in the next version of CalendarScript. On the settings page where you set the start day of the week the number of days displayed could also be set. This way you could define each calendar on your site separately.
Gavit Sports uses CalendarScript to provide schedules for high school sports in an easy to view format. Eliminating Sundays from the display makes the remaining columns easier to read. I can see where a business that is only open Monday thru Friday or Monday thru Saturday could use the same functionality.
Thanks