Hello,
I want a bombproof mitten setup. Looking for late season in the mountains. It has to be 2 piece because of access to trigger in a pinch, while keeping my hand warm. Im thinking these kinco Alyeska wool fold down mitts but looking for a chopper like leather mitt to cover. This is for extreme cold so not at all worried about wet. I have Kinco insulated leather mitts but their insulation gets thin in the high wear spots.

What type of leather do you prefer for these? Cow/Pig/Deer/Goat? Why?
I want a bombproof mitten setup. Looking for late season in the mountains. It has to be 2 piece because of access to trigger in a pinch, while keeping my hand warm. Im thinking these kinco Alyeska wool fold down mitts but looking for a chopper like leather mitt to cover. This is for extreme cold so not at all worried about wet. I have Kinco insulated leather mitts but their insulation gets thin in the high wear spots.

What type of leather do you prefer for these? Cow/Pig/Deer/Goat? Why?