KT is a big HP sponge with a deadly cannon. KT stands for "Kite Them", and you should use it with a conservative aproach.
I think it is more useful when the game is coming to its end, you got the VP's on your hand and you can use it to watch from the back and push it to thin enemy lines. With some competent skills of mixing you army, you can hold the opponent off till the end of the game.
I'm pointing this with a 1v1 mentality, so mind that.
So it should not be rushed?