I quite often use the tautline in combination with the truckers: Use the purchase of the truckers to reduce the load that tautline has to hold, but the adjustability of the tautline lets me cinch things tight. Super handy on sailboats.

Great example is from the video linked above with the airplane. At the end he's complaining about the tautline. In that instance, I would use (if not the knot he's showing) a truckers to the plane, and the tautline to set the length.