Foresight + Convalescence is a pretty potent combo. By themselves, they aren't all that great, but when used together they cover for each other's deficiencies (assuming your healer is even half awake, that is). Convalescence, also cover's for Foresight's lack of magic mitigation via active healing, and given that the two of them share a GCD, it's pretty straight forward to just pair them together regardless of which tank you are using.

Together, they work quite well for low dmg situations. This is pretty much my go to combo for small pulls or any instance in which I know dmg is light. If Dmg is heavy, on the other hand, they can also be easily paired with other GCD's for additional mitigation without using a strong CD such as Rampart/shadow skin or Sentinel/shadow wall. It's a good way to save your bigger CD's for when they're really needed.