So if you use your SG to defend opponents SF for a tactical reasons, his other skills will not take any effect, just the defense, but only one who could figure out this confusion would be your actual opponent after the match, the next one could be suprised by defensive ability of your SF like the last one
If your opponent would be able to see this so would the scouts for the other teams in your league who report the tactics back to your league opponents.
So it is not any useles-only-providing-information thing, or only help during training juniors on unusual positions,
I don't follow...I feel providing this information only enhances the tactical thinking that occurs before the game and would make the simulation more realistic.