In a PvP with shotguns around every corner, and a motion sensor that ruins any element of surprise you may have, Shoulder Charge is nothing more than a gimmick. In PvE it is a suicidal tactic; even if you Shoulder Charge a Dreg and heal yourself, there will be more minions to bring your health back down. I've never seen anyone use Shoulder Charge in Vault of Glass, or Crota's End, and [i]certainly[/i] not in Prison of Elders. It is [i]at best[/i] a mediocre ability.