Originally Posted by
RKenshin
I'm not really sure what level of SAM tanking you're talking about but, I've been tanking mobs for the majority of the time I spend on SAM and it really works rather well. However subbing NIN isn't necessary for it to work, and in some situations I wouldn't even recommend relying on Utsesumi over Third Eye.
As far as /WAR goes... Over the last like ~6 months or so I just Provoke stuff out of habit to start the fight, which makes tanking a lot easier (and more reliable). In exp/dynamis I'm using it almost constantly as soon as it's ready. Me starting off a fight with Provoke+a WS basically glues the mob onto me for it's life in exp/Dynamis/Limbus/Einherjar, and allows me to time Third Eye more accurate. The biggest mistake most people make with Third Eye is they use it whenever the recast is ready regardless of having hate, and that leaves room for you pulling hate late into the duration and having it wear off after one anticipate/counter more often. The best way to do it is to use it only when you're about to have a mob glued to you, be it right at the start of a fight when you Provoke or right when you WS, that way you get the highest odds of anticipating/countering multiple times. But that also is one of the problems with /NIN, since you won't have a steady form of hate. While provoke isn't reliable in itself, I don't feel that just the WS/melee damage is either, but together it's a different story.
And, as the post above me said... SAM can get a load of -damage taken, and it really makes a significant difference in your survivability and how much MP is spent to keep you alive. Third Eye can go a long way to reducing the damage you take while tanking but, it's not possible for you to 100% avoid it, so a set of damage reduction gear is really important IMO if you seriously do tank often on SAM. Unfortunately, most SAMs just don't invest in a set.
Anyway, there are some situations I find Third Eye to be a little more dependable/easier to manage. In particular tanking fast attacking mobs like MNKs or mobs that use Hundred Fists. It's impossible to keep shadows up and recasts ready in time for those situations, so Third Eye's mechanics work out really well. In dynamis in particular I'll often tank MNKs doing this if a PLD isn't available, starting the fight with Provoke+WS and then switching to damage reduction gear. IIRC the highest number of anticipates I had in a row was 28. And, I also really like Seigan for Chariot tanking now in Salvage. Unlike Utsesumi it doesn't get cleared off by the AoE spam the chariots have so it's much easier to manage.
All in all though it works great as a tank for many situations if you have the right gear for it. I've been doing it in just about every situation over the last ~almost year now and never had any problems or roadblocks.
Gotta run so leaving it at that for now!