I've changed them on mine, no hassle once you have the right sized spark socket. I have one if you need to borrow it. Easy out though, take off cover, take out each ignition coil with allen key, wipe any excess oil off, generally only by coils one and two. unscrew spark plug, replace... and reattach ingition coil. Very simple. 15 min job.
Got it all done and dusted longest bit was the ******* of a underside cover. And the oil filter is tiny. Only problem was finding out we need to get some piping from the BMC to the MAf as the rest of the piping is fine.