I love your tuteur, it would look great with clematis. I have mentioned this before, I had put a 8' length of CB Tower over a Sweet Autumn Clematis, had added a birdhouse on top. Update it is now all covered by the clematis and looks like a green and white pillar. Has covered the birdhouse too.
While reading this I thought, maybe I should try adding another length to it. Apparently, Sweet Autumn Clematis can grow up to 30' tall. Can you picture what that would look like. Not great posting pictures but I will try.