The Inuit don't differentiate daily life from survival as we do. Their sewing kits are a part of every day life for them, as are all of their belongings, and all of their belongings are necessary to their survival.
Oh, and when you travel by plane, do you leave your entire PSK behind or just your knife. There's a little legality issue there. But it does illustrate how our lives are very seldom reliant upon survival items, and even less reliant on arctic survival items, so I don't quite follow the logic of your Inuit parallel. And besides, unless you are wearing clothes comparable to what the Inuit are wearing (very thick hair insulation surrounded by waterproof skin), your sewing kit will not help you, let alone save you.