You must be talking about Daves in Port Dalhousie.
As far as I'm concerned the best cherry wood are the trees that are wild and grow in the hardwood patches. Not sure how they got there but they are abundant if you know what to look for.
As far as using grape vines as your smoke wood maybe ten or more years ago we did the Grand Opening for Angles Gate Winery over in Grimsby and we used their own cuttings for smoke flavour and their what I would call a late harvest wine (similar to Ice wine) for a glaze on smoked ship and scallop appetizers. That particular wine was also used in a BBQ sauce for chicken dish
Also I sent you an email about Argentinian BBQ but not sure if you received it yet
