KONA SUTRA

I've got the 2009 (green) version - superb bike. Bob a Brooks saddle on it and you're more than sorted.
Used it almost daily for the past 18 months, commuting, touring and the odd century ride. Love it.
It handled last years snow very well.
I beg to differ on a few points above - a tourer is not just a winter bike with panniers/racks etc. A dedicated touring bike will have a slightly lower bottom bracket for stability, a slightly more upright riding position, rear triangle will be built to accomodate a rack and pannier ( some road bikes rear end are that short that when you fit a pannier you catch your heels as you pedal), the gears will be more than likely be a triple chainset with a wider ratio cassette than most road bikes. It will also be be built for comfort, reliability and strength rather than speed.
Have a look at Kona Sutra, Salsa Fargo and Surly Long Haul Trucker - bit different to 'just a winter bike with panniers'.
and as for off-road - no I didn't buy mine for going off-road. But those cross tyres were cheap and , well you can guess the rest.