From a min/max perspective it is not useless. To casuals its just icing on the cake while to raiders its the make or break for caps. i.e acc, sks, pie, etc. Also we don't know what the savage/esoteric gear secondaries will be so we just have to wait and see. Atm there is way too much skill speed on tank gear and parry is only useful to DRK who has Low Blow and Reprisal procs. PLD has blocking and WAR has Raw Intuition.