Thanks for mentioning that Chicago Hardy fig Cash.
I may have to look into getting one. We're on the border of 6 and 5 zones here. I've seen -24.9F on my home thermometer since we arrived in 2016. Not a frequent event, but it does happen.
Seems from what I was reading if I put it in the right place and protect the roots I may do OK with one. And, as they don't seem to get huge, if I ever get high tunnel I may just plant it in there.