If someone is going to the trouble of getting a low loader, dragging my Cali on it from my drive and driving it away (something with no known evidence of ever happening), they they certainly won't be fooled by a tracking device and will have it in a faraday box before you can say "waste of money". They have all the devices and tools to remove all your gadgets.
I guess they could sling ropes under it and helicopter it away. Or take the wheels off and four big lads carry it away. Never heard of those happening either.
I've always said on here - Ghosts to wheel clamps, if it makes you feel better, brilliant. But it's not actually needed. And that's not just me. Thatcham recognise that a Cali and the level of security has it is the best you can get. The fact they they are not keyless is even more secure.
Keys safe. Cali safe.
Don't be fooled by car theft stats from these companies either. These stats include theft from a vehicle, not of a vehicle. Which is in the rise. The latter has reduced to nigh on zero, unless you live in London and have a Ranger Rover that is...