If you search for Trumpet Vine on these forums you'll find a LOT of reasons not to plant it. I planted some and after reading on the forums pulled it up and burned it! Apparently, it won't bloom unless it has full sun and is so invasive it'll take over your yard and eat anything in it's path. You could try honeysuckle, although it won't be evergreen. Virginia Creeper is nice, but doesn't flower. Ivy can be quite invasive too, but I hear the varigated ones are better than the standard English Ivy. Again, no blooms, but that one is at least evergreen. Dutchman's pipe? Not sure if it'll be perenial where you are.