You could try Clematis cirrhosa (winter blooming) or any of the cartmanii hybrids ('Avalanche', 'Joe', 'Early Sensation'). IME, the cartmaniis are not very robust and do not grow very large to begin with, so may have difficulty in fully covering a trellis, depending on how large it is. The cirrhosa in my old garden was not exactly in full sun but in an open western exposure so got a lot of sun, especially late day sun :-) And it would produce blooms sporadically all year long, although winter was its primary flowering season. This is a massive vine and like armandii, can become overly large and quite heavy in time. If you do need to prune, do so in spring just after the major bloom period has finished.

You should also be aware that zone 7 is the bottom range for any evergreen clem so be prepared to experience winter cold damage to any evergreen selection in a tough winter.

Well, if it's like armandii, it's out of the question - been there, done that. I finally had to kill it bcs I couldn't keep it off of my neighbor's fence and other property. It sure was pretty but what a monster.

I will check out the others for sure though. Thanks for the suggestions!

I'm going with Lonicera sempervirens "Major Honeysuckle".