you're very lucky living so close to the channel. we spend a lot of time in france, usually 6 weeks in may/june and another couple of months in sept/oct. depending on which ferry crossing we do, i love spending time browsing around the calais supermarkets, athough we usually go to the ones at coquelles.
i've taken to roasting garlic cloves whole as they don't seem to taint food as much, which satisfies my husband's dislike of them, and i can eat the whole cooked ones. next time we're over there i'm going to treat myself to a string of the smoked ones you mention and have a bash at doing what you do. thanks for the tip.