Fear--well that looked like a very positive test--if the
cup would stand up to the heat from a Gaz stove it should
work with just about anything..i would not want to do this
other than a back up when no other pot would be avalable.
my hiking stove has a pot as a cover and i use the water
out of the Sigg to make tea or coffee and drink it out of the
cup..you took a chance with a pricy bit of gear for that test.--all us Sigg canteen onwers thank you--