Few years ago now I took an off road driving course up on the moors near Barnard Castle (yes those moors near Barnard Castle...I could see them clearly). They did off road driving courses and off road trailer training.
Great day to be fair, bloke was cracking, we started off well when as his opening on after completing the safety brief when his opening question was "you know what a diff lock is?" And he got the answer "have you got 1, 2 or 3?" Looked somewhat surprised given I'd turned in my Suzuki in a pair of vans. At that point he decided to explain he'd had to special order his defender with only 1 which was a mechanical centre differential. Customer cars had one mechanical centre and effectively 2 electronic cross locks via the ABS. Because he did a lot of training for oil companies where they might be provided with an 80s Land Cruiser he had to make sure the trainee could drive the car and was not relying on the systems.
Even in 2009 to get rid of hill decent control and ABS needed to go via Land Rover Special vehicles.
Great fun it was, not so much training as pissing about in a Defender learning random factoids. At one point we were doing some axle articulation..he says "stop it here and get out" so we do, or try to, 3 shoulder barges into the driver's door and eventually it opens. Which was the whole point to demonstrate that a Defender surprisingly bendy.
So what is the point of this ramble? Well this bloke has just recently bought a Grenadier I'd imagine for the same reason. It'll be built to his spec and i'd bet cheaper than the new defender when you do that that and a lot less low plastic for him to replace.