Different interpretations of the elements of point rolls have been around for a long time. They stem from poor word smithing of the descriptions over time that has provided focus on the "point". Most will agree that, actually, all point rolls are about some number of equal roll rotations with equal pause between rolling elements, and this is generally how point rolls are flown and judged. Using that wording in the description of a point roll would minimize confusion.

Another consideration is that rolls begin when the wings leave the entry plane of flight and end when the prescribed number of degrees of rotation is complete. Pretty simple to grasp for one roll - put a straight line entry and exit of the minimuim distance (no need to be equal) and you have it. Similar logic applies to point rolls - roll X total degrees in some number of increments, with equal pause between increments and it's over at the completion of the total number of degrees.

For example - a 4pt. Roll is about four 90 degree rolling elements with an equal pause between rolls. The key word is pause "between" elements - usually defined as a "point" - there's no between after the last roll element - the thing's over when 360 degrees of rotation are complete.

So- apply this to a 2 of 4 Reverse Split S and you have two 90 degree roll elements of a 4pt Roll with the pause between roll elements - the roll portion is over after a total of 180 degrees rotation (no point after) and time for the loop element.