It seems to be a very expensive and inconvenient fuss that would only deter the casual or amateur thief.
I get it for very very expensive upmarket super cars as a bit of a gimmick. These cars have a sophisticated tracking service.
But for a Series 2 Land Rover
Unless at home, you're going to be walking round with a big lump of metal, not very practical.
A pair of mole grips will get it up an a recovery truck.
I think you'd be better off with one of those steering wheel locking covers - a good visual deterrent to the "casual" thief.
I would save my money, or maybe a steering wheel locking bar
As we/I keep posting in topics like this - If they want it, they'll take it no matter what precautions you've taken and before you can shout "Stop Thief" it's gone - either cut up into pieces or stuffed into a shipping container and away.
Get your vehicle properly insured on an agreed value policy and keep your fingers crossed.