I apologize, I was unclear in my explanation. The sub can win points for each hole played. The match points would be for the team net scores. He could not win those points (2 in this case) because he is not a true member of the team. The idea would hopefully create a greater incentive to play each week. It would also allow the regular opponent to the sub to get some points in the event that the sub is a below 5 handicap player
Well I still think the sub should get all points available. They did play in the match after all.
If you want greater participation, limit the amount of times you can have a sub play for you and that sub must play to a 0 handicap.