When visiting the wine ships in Zurich I don't seem to recall smoking being an issue, so I can only assume it was banned. Either that or hardly anyone wanted to smoke inside (i.e. very unlikely!)
I tend to agree with Nick - how there can be a wine tasting event under the heavy cloud of smoke defies belief.
My only complaint at the Zurich wine ships is that I spent ages trying different kinds of port. When I decided what I liked I told the guy "Right I'd like to buy this one and this one".
His response: "you have to go and buy them Globus".
Talk about blowing a great sale opportunity - none of the vendors can make sales there and there. I never did buy that port.