Primary position

Also many of you still seem to be doing the, "I have rights. I'm going to sit in the primary position belligerently" irrespective of the road conditions. Surely this is what causes a lot of flare ups? Are there any conditions in which you'd temporarily move into secondary position to allow a faster moving vehicle to pass before going back to primary?

+1 - there's a fine line between being an assertive road user and a sanctimonious prick.