Sure, if the BIC lighter works, then by all means I'd use that! And I carry one of those BIC's. But I'm looking for a backup that will basically work under the worst of conditions, when the BIC might fail. Of if the BIC leaked out it's butane after years and years of sitting in a bug out bag.

For lighting alcohol burners like my Trangia, I prefer the firesteel over the BIC though. The firesteel always lights the Trangia first try, and your hands stay farther away as you're lighting it (not that alcohol lights up that hot initially to be a significant danger if you're holding a BIC or a match up close).