I got two of these for the last trip to Moab. Delivery time took longer than the 2 days I was quoted, but good phone service. I ratchet strapped them to the ARB roof rack, both filed with 4.5gal US. I ran Elephant Hill, Steelbender and the beginning of Moab Rim (blown diff, ouch).
During those three days I watched them expand and contract with hot/cold temps. No leaks to date. I did not keep them inside the vehicle, so don't know about out-gassing. Overall, very handy and easy to store/manipulate. At the end of the three days, I dumped the fuel into the tank and was pleased by the rapid flow rate without spillage.
