hmm. can't really tell you.
how wet/cold does it get? because i don't wear mine much at all this winter. if it was a warm day, then yes. but if it was wet/cold (the norm) then no. it was no help.
now, oli -- our feldy guy who wrote this awesome new blog about pimping your stretch -- wears the leather ones with socks in winter and he says he's fine as. So, perhaps that would work for you?
and yes, that was a shameless plug for oli.