Paladin's as a MT, should NEVER run out of TP. Shield Swipe actually gives you TP, it's so efficent.
Basically, if your Paladin MT is not using Shield Swipe as often as possible (After threat is established of course) Then they are not only burning TP needlessly, but they are also losing out on a large amount of DPS.
So, if it's a Paladin MT, No goad. give it to the OT.
If the Paladin is an OT though, ... They need it. =P