December 22nd Some Flower Advice?

Our Christmas Lily has flowered just in time for Christmas. As an aside, I wonder if that is why they call it the Christmas Lily? Although if it is a summer flowering Lily, then in the Northern Hemisphere I am guessing it wouldn't be called a Christmas Lily would it.

Anyway I am on a Christmas waffle.  The scent of these are absolutely divine I am wondering if anyone can tell me how they last as a cut flower. I would like to pick them to have inside, but if I do that and they don't last very long, then I would rather leave them in the garden. Decisions! Decisions!