Salary and DMI has nothing to do with the reverse patient. Patient, reverse or normal, searches for the player with the best JS+JR to shoot the ball , mostly with jump shots and 3's. If ur most expensive players is a tall guy with high IS ID REB but low JS JR he will not take shots
Gameshape also counts when playing reverse patient. When ur best outside scorer is substituted then the game engine searches for the next guy with the best JS + JR on the court. Half or even more of the shots are taken by the best shooter, the other shots are randomly distributed, depending on the opponent's defense and his strengts/weaknesses