I think what you'll find with II's is when you play them in the league and then in the championship it's not the same teams. Not full 15 but when you can call in 3/4 boys who are fairly handy it makes a big difference at Junior level. Clubs can talk about having 2 different squads and sets of players but a proper Junior club will more than likely have the same 20/22 players playing for them all season.