I tried it my climate is not like yours I'm only heatzone 1/2 but it grew here, it takes very little space, it looks like a Jerusalem artichoke but doesn't get anywhere near as tall and grows a clump of tubers like a dahlia.
The tubers were very bland fresh with a slightly sweet piney taste, they didn't seem to change with storage at all. I did not manage to keep any of them overwinter, they dried out while all of the dahlias they were sharing a tub with were fine so I decided they are more effort than they are worth for me.
As for gas production they were exactly the same as Jerusalem artichokes for us.
Destiny's powerful hand has made the bed of my future. And this tiny ad: