Recent experience with crank pulley bolts (on a Ford Focus) would tend to indicate that you are probably better off using the recommended "special tool" (which is a torque multiplier) - otherwise the other "special tool" (which locks the flywheel in position) will snap off and leave some unhelpful bits of debris in the clutch casing.
The crank pulley bolt itself is some sort of "stretch bolt" and is discarded as a new bolt is supplied with the cam belt kit
Attacking the bolt with any kind of impact wrench is NOT recommended !
The crank pulley itself has some sort of magnetic hall effect sensor for crank positioning, but DOES NOT have a Woodruff key or anything to fix it in the correct radial position :-\