Rage Strike and Pommel Attack are pretty good for general tanking, if you're primarily off tanking you don't really need both 5/5 Endure and Parry, if you can get your parry high enough via strength to be nearly 100% then it would be the preferably choice with slightly more uptime, and most offtanking duties have damage that can be absorbed with Parry.
You can't really be respectable DPS as a Swordsman without Battle Tactics unfortunately, so you might want to build in anticipation of getting the gear someday rather than the opposite. As a main-tank focused warrior you will need both cooldowns to turtle and you can forego battle tactics to save points since your DPS will be less important, but you should still get Rage Strike and Pommel Attack.
As a tank Swordsman you should also really orient away from 40/40 builds as it wastes a lot of valuable attribute points when you can make great use of 3 (and arguably 4 with Battle Tactics) stats. 36/36/25 or 33/33/32 are much better options.