I have a 7 mile commute to work too. When the snow/ice is serious enough to cause problems I find the quickest, safest and easiest way to cover the 7 miles is on a mountain bike! The Tenere just isn't the right size or shape for successfully negotiating the sort of icy and hard packed snow in we get Britain. Yes, you could fit studs, but they'd be pretty pointless in the UK as it'd be only for, at best, a few days a year and the roads are always so inconsistently covered with snow/ice, even during the worst periods of weather.
The only bike I'd trust myself to stay upright on in such conditions would be one of
these.