You could of bought one of eBay for £20 and then had an extra £15 towards the Oaks!Got mine from Banwy. If you don't already have a grab handle in place you will need the Retaining Bracket also.
Otherwise this is really easy to fit, remove the grab handle replace with sunglasses holder
Sunglasses Holder
So have a factory fitted one on the Drivers side and this one on the passengers side. There is no difference whatsoever.
P.S. Not well off enough to try it with Oakleys