In reply to Slarti B:
Hi Slarti,
Hmm, seems different to my experience of them. Were they autosocks as opposed to another branding? I know some (e.g. halfords own versions) have been roundly slated as crap. I've had similar sounding conditions (in Scotland) and found I got comparatively good traction - without being there it's hard to say though.
Would chains have coped massively better if it was really heavy falling wet snow? I know I've had a couple of scary drives down from resorts in the Pyrenees in really heavy snow where chains were still really insecure and slippy. This was before I'd used auto socks though and I haven't had the same conditions to do a comparison since.
Only time I've noticed a huge difference was on hard glassy ice (rather than compacted snow-ice) rather than wet snow (which I've found my socks better in).
Still, for the UK I'm very happy with the autosocks, 4 years in with infrequent use every one of those years and not close to worn out. Given how infrequently 95%+ of folk in the UK will actually need them I do think autosocks are spot on for most people.
I'd agree that for daily prolonged use like in the alps, Norway etc chains are a better option though as the socks will wear out with that kind of use faster than chains.
Cheers
Stuart