So I've been looking into Arachnos Soldiers lately, because the thought of providing a team with such huge constant buffs makes my mouth water. My main is currently a tanker. While looking into the Crab Spider options, I noticed that their durability is quite respectable; actually it seems almost exactly as good as the durability of my Shield Tanker. You can cap defense, increase hit points through serum, and get very good mitigation from crab spider armor and Fortification. You also resist a good amount of status effects. The problem then becomes aggro, which the Crab Spider has none. This would leave you wholly dependant on the Presence pool for one single target and one AOE taunt. They have to hit, and the durations are poor compared to tanker versions, but I can't help but think they just might be enough.
So my question is, has anybody tried to play a crab spider as a tank, and if so, how is it? I don't expect a crab spider to be *as good* as a tanker at tanking, but if they can do the job to a satisfactory degree, their additional team buffs would be a powerful incentive to use them as tanks.