Still not sure what is different about high altitude butane as my lighters worked just fine going from 4500ft up to over 10,000ft for 3 days, and i noticed no issues, needing to adjust the flame, purge and refill, etc. With my cheap, but very clean Neon 11x.

Starting to think Xikar is pulling a fast one and its a marketing gimmick.

May contact them and see if they offer a reasonable explanation.

I friggin love cigars