Not to worry. Any heat source can be used to safely ignite tobacco in a chamber with no harm to the rim. Time, distance from source and BTUs are all variables. You can control the first two easily, the last one by utensil at hand. The study cited above, while impressive in its scope, has too many flaws to be useful.Because the worst thing of all is to try to smoke, and find you can't light your pipe!
Edit; upon further reading, I think the difference in temp has less to do with type of fuel and more with fuel delivery: wick vs pressure. Or else I'm just wrong about all of it! ::
2nd edit; Here's the thread I had in mind. http://pipesmagazine.com/forums/topic/experiment-match-vs-zippo-vs-bic-vs-old-boy-vs-torch
+1 on the butane insert for a Zippo. I've had two of them for about three years now and they've been reliable. I like that they allow you to control the height of the flame just as other soft flame lighters.If you haven't looked into them yet, I recommend the butane inserts. For me, the butane inserts are a lot easier to work with and can be dropped into any shell. Less odor as well.
On the other hand, I usually just use a bic, so I'm far from a lighter expert.
EDIT: Actually, I shouldn't say that can be dropped into ANY shell/casing, as I don't know that for a fact. But they should fit the standard zippo size.
True, it helps, but the bigger leak is via the wick itself. (with the lid closed, still a major lack of seal.) I am looking for a small zip lock to put the lighter in to save fuel evaporation, as I may go days or weeks before the wind is too strong for my butanes.Naptha can be bought by the quart very cheaply at any hardware...Zippo/Ronson fuel is naptha for the fluid type lighters. I did buy a can of zippo fuel and refilled it from the quart... lasted for years.
About the evaporation issue for the fluid lighters, a bit of Vaseline jell, gun grease or similar smooge on the zippo insert to help seal it helps prevent it. Zippo's are number 1 for 'keeping it simple'.