Trying to hold Giacomo Tamburello liable as alleged guarantor for a so-called “lease extension” he signed as president of Euro Cappuccino Inc. in November 2005 — nearly three years after the expiration of a lease Tamburello expressly guaranteed — Euro Cappuccino’s landlord (a land trust controlled by Demetrios Kozonis) invoked a line of Illinois cases, based on Bank of Commerce v. Riverside Trails, 52 Ill. App. 3d 616 (1977), that the Vermont Supreme Court rejected as “a creative mixture …