Hazards: Cold. Of wind double-dipping, clothes into water single-dipping et al.

[Anthony]

Originally Posted by vicky_molokh

Hmm. I wonder how hydrophobic is or isn't the oil-treated material.

Oil itself is hydrophobic, it's just somewhat problematic to grease the inside of a coat unless you also grease your skin (which Eskimos may well do). Also, greasing insulation is bad for the insulation (though probably less than wet insulation), and low-tech insulation materials aren't hydrophobic.