I've found the rear wiper pretty handy for keeping some semblance of rearward visibility, especially in the winter months when the back of the car seems to be constantly filthy. It also helps for batting off frost and ice when the heated glass is taking too long.
Gave it a good foaming (thanks for the heads up 'king monkey' on the autoglym offer). Popped my snow-foam cherry!!!Not sure if it really made a great difference but did look really good!
Just finish fitting a rear sway bar ..... happy days
I know there are a few videos comparing the two but there can always be more!!