Not really wank factor, they are useful with FI set ups, or, like i had in my old VP, long story short, had the pod mounted in the front bar. Straight cold air hitting it and being sucked up the intake pipe. Had to clean it every week without fail, but my old VP had a VP Senator bodykit, so the front bar has 2 holes each side of the front from factory design, perfect spot to house a poddy.
Other than that, i wouldn't waste my cash on one. My VS Senator has the HSV cold air induction system from factory with the high flow rounded top airbox, i shaved the lip on the intake scoop back a few centimeters and sanded it etc so it didn't look like ****, worked alright, would let more air in, as they are from factory are ****, you can't even fit your finger between the lip and the body of your car.