Quite, and the impact will be the exact same for every tank there is. Unless tanks are out there comparing their DPS to real Damage Dealers, they lose/gain nothing in relation to each other, so the effect, regardless of what it is, is a wash.
Honestly, the OP has posted on this topic before and found few listening ears then, and it seems even fewer now. Not surprising really since;
a) he'd had use of whatever STR accessories he has for however long he's had them,
b) he has a decent amount of time to get VIT accessories,
c) those STR accessories will go well on other damage dealing jobs, so it's not like he loses them, and
d) the change to VIT impacts all tanks identically, so unless he's completely addiicted to higher damage numbers or in an insane struggle to out dps real DDs, this will have exactly no practical effect on him what so ever.
Someone tell me if I missed anything here, I don't think I have.
@ OP;
Dude, just stop this nonsense, go get yourself some VIT accessories and deal with it. All the whiny crying in the world isn't going to change things, not that the change to VIT does much except change which accessory set is best for tanks.
Well, since enmity multipliers will be modified as well, any loss of enmity due to lower raw dps will be more than compensated by alterations to the enmity multiplier. I am not as concerned about the DPS a tank can put out because as long as it is sufficient to complete solo portions of the game, it has negligible impact on the game otherwise.
Honestly, every tank has a baseline dps that they will hit regardless due to tanking, if they can boost that by, say 30%, through accessories and stance, they still fall far short of what a real damage dealer is capable of. If that modest increase in tank damage output makes a significant difference to the run time of a regular dungeon, or any content except tight dps checks in a raid, it's really not the tanks fault. Basically you can't tell me that the boost to damage that my PLD could gain by using all STR and Sword Oath while tanking is so awesome that it significantly shortens any fight.