So when I got my Disco Sport I took the coat hanger from the Jag, added a bit of carbon fibre to cover the Jaguar logo and put it in the new car. I use the hanger a lot for suit jackets so it was worth the swap.
The fittings on the Jaguar one though aren't quite right as the DS rods are slightly thicker and it tends to squeak a little. Then I found that for the new Discovery a "click and go" system has been developed where a base that goes in the headrest can have multiple things added to it from a hook, to a coat hanger to a work station.
I bought the base and hanger, not cheap from Duckworth parts but it would be just as home in a Jaguar as in a Land Rover. Note Duckworth are substantially cheaper than the prices on the Discovery site