It seems to me they have this system in place to encourage more people to use the duty find option. Albeit I too run with another person most of the time, and don't see why this would be a problem as long as there is no option to vote for the person you are in party with, or make it so the leader of that party only can give the accommodation to someone else out side of the party that why some dude that happened to not be in the party doesn't just get 3 commendations because he wasn't in the premade party.