I carry a Strikeforce but I've never used it except for starting a camp stove when my POS butane striker failed (it's hard to beat propane for tinder). I've practiced with it and it works very well, putting out a serious amount of sparks. It's probably bigger and heavier than most backpackers want, though.

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.