In reply to JH:
As you can't fly with propane butane cartridges, most people buy them when they get to the alps anyway. Although if you wanted to use the stove at home it might be worth looking in a hardware store for propane butane blowtorch cannisters, which also fit. You would need to hang the jetboil up though, because the blowtorch cannisters are tall and thin.
Personally I much prefer the convenience of gas to petrol, but I have used an MSR to melt snow in the alps, and it worked just fine.