Hi:

I just saw this, although it's been awhile since you posted, I hope you weren't holding your breath :)

I grow Hardy Kiwi in very little direct sun, and they do well. Not great, but well enough to get healthy but not dense foliage and a couple of tiny kiwis. They get less direct sun than your prospective teepee, so they may do even better for you. You will need a male and females in order to get fruit. Some hardy Kiwi is variegated, mine is plain green.

There is also Virginia Creeper, which is even more shade-tolerant.

I am not sure how either of these vines will fare in your particular zone and climate, but I hope this helps you!

How about confederate jasmine or crossvine. My crossvine blooms nicely in partshade and so does my jasmine and sweat autumn clematis.

My clematis also does well on the west side of the house with dappled shade from large maple tree. Starting to grow now. I love this time of year when things are peeking out of ground.