Oh Wow, now I want one too!
Well, I think it depends on your microclimate, and it could croak in a big freeze, but looks totally worth it. I would try it in full sun here. And Annies is having a sale now...
I had a Cestrum 'Orange Peel' in a big pot that lived for several years out in the weather, my sister Ali has one in the ground that I started from a cutting, I think I will try them together.