What's your core glove system?
So far I've got
- good dexterity gloves
- shitty leather work gloves
- awesome finger-free wool gloves
- shitty wool liners
- ok wool mittens (comfortable with liners down to -8C/15F)

Overall I can't really work or be comfortable with that system at -10C and below.

I need to build on that system to get down to -20C/0F for this winter.
Looking for a wool, leather combo, including leather overmittens or something like that. If there is synthetic insulation between the wool liners and the leather outers that's fine too.

Where do you get good expendable leather work gloves? (making wood mostly, the hardware stores gloves kinda suck for /out/ings)