Hear me now, believe me later: do not spend your ducats on some fancy-schmancy "stormproof" lighter for high-altitude mountaineering. They will have their way with you and leave you with nothing. No fire. No food. No love.
On Denali my partner had his Brunton stormproof lighter and I had some cheap imitation; both failed completely by 14,000 feet. We had brought about six back-ups, plastic push-button gas-station types, but they failed as well.
Luckily there was an all-woman expedition camped next to us and my partner, who is only marginally better looking and has much looser morals, went over and prostituted himself for a 99-cent purple Bic lighter with the mechanical wheel. This low-tech wonder got us to high camp. As Lenin said, quantity has a quality all its own. He was talking about tanks, but it also applies to lighters.