Hi Yone' (so sorry I got the name wrong)
I'm so glad! I hope they succeed. They produce a lot of top growth so it should be ideal.
Reminds me of the micuna bean (or velvet bean). There's bean a project to grow these in Central or South America as they create soil, so are used on upland areas which have been eroded after conventional agriculture caused run-off. I'm not sure they're tremendously tasty, though they are nutritious (I remember a TV programme about them which showed them being ground and used in bread). They were growing in the most unpromising places. Just found a link:
http://www.new-ag.info/01-6/focuson/focuson8.html. I wonder what their frost tolerance is, but I bet they are good even if not frost-hardy as they would wilt down and rot at the end of the season.
Anyway, good luck with the artichokes!