Well the running for a minute before use isn't, IMHO, as crucial as the spinning down time, as long as you don't rag it too much from cold (which isn't advisable in any car, full stop). The 1-2 minutes after a run to cool the turbo is relative to how hot it's got anyway. The last minute or so may well be off boost, just pootling into your street, and backing the car up in the drive, which could well all be off boost anyway, which is why yours has lasted. And it could be that your msisus doesn't drive foot to the floor everywhere, and drives it quite gently, which again all helps.
The main thing with turbos, I suppose it to pay extra attention to giving them a chance to cool down when they've been worked hard, i.e. Mr Company Golf GTI (turbo) driver coming into the motorway services, after having just been doing 100mph+ down the motorway, and shutting the engine straight off before getting fuel/food/whatever, is more likely to knacker it than someone just using a TD for the shopping, and not driving it particularly hard.
Having said that, with the complexity of the roads into some motorway service stations, and the sheer amount of road you've got to cover at 20mph or so before you get parked, that gives the turbo a fair chance to cool down to start with anyway.