I have several binata forms (binata, two types of multifida, dichotoma, dichotoma giant and also a 'marston dragon') outside and they all survive. They die back but come back from the roots. This year the winter has mostly been mild and they already started sprouting about a week ago.
I have all species of sarra plus multiple hybrids, darlingtonia, cephalotus, drosophyllum, drosera filiformis and temperate pings outside without problems. I decided to put my vft's in a cheap growhouse just to try to encourage them to get back into growth a bit quicker this year. They were outside last year and were okay but a bit slow to get going in the spring.