A dinnae ken his name, so we’ll call him Mac. We could even call him Big Mac given the size of his query. Did I mention he’s frae Scotland?

“Has anybody said what Scotland leaving the union might mean for us traders in Scotland?” he asked, adding, “I buy from an English wholesaler.”

We don’t seem to have had a proper debate on this tricky subject, although a lot of opinion has been aired. The banks have spoken, some big businesses, too, including BP, the pension people Alliance Trust, and even the ex-Nato chief Lord Robertson put in his two-cents’ worth, labelling the very idea “cataclysmic”.

The FT said that the UK’s largest retailers, including Tesco and Sainsbury’s, had “voiced overwhelmingly hostile views” on Scottish independence and warned of higher food prices for Scots, although Asda told the Huffington Post that its prices could drop if an independent Scotland were to cut its retail levy on alcohol and tobacco (now there’s novel: a cut in taxes).

But, back to suppliers. I shouldn’t have thought they will want to close their doors because of ‘borders’. There are ways around borders. Distance carries a cost, but then Cornwall is a bit distant.

Big Mac and I had a long, inconclusive conversation just like the rest of the UK. He’s going to talk to his symbol supplier. And no, he hasn’t made his own mind up yet on how he will vote. One thing we can be sure of: there must be a fair few conversations going on behind closed doors at the moment.