I agree. Zephrine was wonderful where I lived in zone 9. And overwintered beautifully here in 5. My neighbors, z9, told me one of the reasons they bought their house was that it was in full bloom all along my fence row and the fragrance was so wonderful in their bedroom.
You've also given me a great idea about putting one on a tulip tree here. I'd been thinking the clemtis/rose combo for several years and couldn't figure out where to put it!