This lighter appears very well made; the thread-on cap fits perfectly and has a rubber O-Ring seal, meaning fuel won't evaporate and water won't get in - exactly what I was looking for since mine is an emergency backup and will be taken hiking, camping, canoeing and sailing.
The wick is adjustable and while it's designed to use lighter fuel, I suspect that (like other liquid-and-flint lighters) it will light acceptably well on petrol (careful - it can, and probably will, explode), methylated spirits, or 50%+ booze in a true emergency situation. I've docked one star for the relatively feeble spark since, like other reviewers, I found mine takes a couple of strikes to light. Unfortunately, that means the flint will wear out relatively quickly but I don't think that's a great problem if used as a back-up.
All-in-all, a great product which does exactly what it says on the tin and looks good doing it.