Very sensible. I'd love it my wife had one of these. She has always handled the finances in our marriage in any case (being far better with maths and accounting than I am). When I was the sole breadwinner in the family, I used to worry about what would happen to her and the children if God forbid anything were to happen to me, so it would have been sensible for her to do this for that reason too. These days she has a job, so I worry less. Still, a great bit of advice. :)