Debster,
Unless it is hit by a really severe frost your passion flower will be back next year, it would be better in a sheltered spot if its ina pot.
You need to check up on your clematis. If you know what it is, go online and see what pruning group its in, and see how to do it. Some are not pruned, some are cut partially down, and some are completely cut down.
All of them should survive winter without any problem