I'm down near Hutton WSM and roads didn't seem too bad, went up the hill to Canada Combe towards the golf course and some big drifts up there!
I'm always surprised at the amount of disruption a little snow causes, as a matter of course I always put winter tires on my car's from around November till April, had absolutely no problem getting up steep hills in the snow (Audi Quattro system is amazing), wouldnt even think about it if I didn't have them though... As for cost, yes, it is expensive for a full set but it evens out to nothing after a few years as you spread your tire wear across two sets of tires...
Anyhow some pics from up the hills of Weston...