After playing PLD and then also lvling WAR to add some mix to PF groups the amount of content ive done as tank is a lot and I have never used provoke to pull mobs. If the main point here is using provoke in dungeons sure go for it its 4 man content its nothing difficult. Unless its like the tanks that use provoke once they have aggro on everything and just use it as part of there rotation that is WRONG theres no need for it its literally doing nothing.

As for 8 man raids NEVER use provoke to pull, every tank ive seen do this ends in a enmity war and just screws you over in the long run. I did all coils a tank and on T13 got the help of some of the best tanks back on Tonberry (just to see if they can teach me anything) and NO ONE use provoke to pull. Best combination is Shield Lob or Tomahawk. If your a MT PLD Fight of Flight and Shield Lob and no ones pulling that boss off you.