Pete, for those that have Calvert, they better treat is like gold b/c one of the Calverts at UCD is gravely ill! I know UCD has duplicate trees in their orchard but if my memory servers me right, I think the one on the A side is dead. And the one of the B side is severly twisted in the ground. I talked to John Priest about this and he said there isn't nothing they can do. The trees were planted without untangling the root years ago.
After I saw this 2 yrs ago at UCD, I started collecting Calverts. Today, I have 4 or 5. Yes Calvert has FMV, what fig doesn't! Most figs grow fine with it so in my opinion, just enjoy your Calvert and bring it inside every year. I plan on never cutting my trees unless I have to--- just letting it big and strong over the next 5 years or so and feed it liquid fertilizer.