my terrible friend who cant pass 1550 says no, but i think they can tank well.
i barely take any dmg atm anyway, but still wondering for end-game
If they aren't, then they're being excluded by people who don't know what they're doing. In the right hands, assassin/shadow tanks are unbelievably good, definitely competitive with the other tanks, and even superior in several ways. My current progression raid group runs two shadow tanks, and while we're certainly conscious of the weaknesses of the class (*ahem* trenchcutters), we don't regret this particular compositional choice.