Not to turn this into a gardening forum, but after a long search I believe I've found a vine to fit some tough requirements and it might also work for MoPho's out there looking to add some green to their block walls this fall. Bignonia capreolata, aka Crossvine, aka Tangerine Beauty has the following characteristics:
-Takes full sun AND reflected sun;
-Evergreen;
-Can climb w/o trellis;
-Relatively low litter.
Apparently it can climb like catsclaw but without the damage, and is supposed to attract hummingbirds....but not bees (good for the little lady). The cost of custom trellises just wasn't making sense so hopefully this plant can live up to the hype. Planting 4 today!
. Already lots of new growth and flowers. It can use some assistance climbing, as it's not as aggressive as cat's claw. However, I don't think a full trellis system is necessary as it is latching to the wall in places. I'm just going to add some fishing line in places temporarily until it's established.