I discarded the cup and all up weight was 265grams - It boils 800mls in 2 minutes! Almost half the time of my MSR Rocket. The gas savings are incredible. Plus the bonus of efficient operation in the wind.
I took a 385g MSR gas canister for the 12 day trip and had about a third of the canister left over.
The Jetboil website states a 110g canister will boil 17 liters of water. I am basically boiling 300mls at breakfast (instant Backcountry porridge) and in the evening 500 for soup, 300 for freeze dried meal and 500 for tea/coffee. So let's round up to 2 liters a day - so for an 8 day trip I can easily get away with a 110 can of gas. This is confirmed from my 12 day trip with larger canister.
The 110 canister can also packs inside the cup, making the overall package very small - good for small liter light weight pack.
I also like the self ignition switch - no fiddling with matches/lighter. However, if I was solo, I would take waterproof matches.
One complaint - the handle is useless - however, because of insulation cover, you can hold the pot with your hands. I am going to cut my handle off.
If you are using the bigger 385g canister in huts, you could leave the canister support triangle at home. However, the canister support is a must if using the 110g canister, or larger one in un-level outdoor settings.