The first time I did it I went through 3 drill bits... (Blk&Decker). Second time I did it (second VX) I bought a $15 Titanium bit...flawless!
The cladding is not bad if you be sure to undo the screws holding the area inside the fender well (where mudflaps would go if you had them)...
I used my rubber mallet to squeeze in and act like a "holder" for the cladding... no problems... had plenty of room to turn.
One big tip though!!! be sure to cut engough vertically on the post cutout (in the cladding). If you are even 1-2 mm off, you won't be able to attach the bumper screws. Then you'll cuss like crazy because now you have to take the screws out from inside the cladding AGAIN!
Measure 3 times... then cut twice.