XTR V-brakes front or rear?

[Barneyballbags]

I have a set of XT V brakes sat in my garage

Oooh, do you? And would you like to sell them?!

 

[yellow-heapster]

Its not just to inform eBayers. They are actually sold as front an rear.

http://www.cyclesportsuk.co.uk/product_info.php?products_id=6377
The question is why - what is the difference, it cant just be down to the angle of the noodle.