I'd like to pose another, related, question. Is a survival kit meant to be used in it's entirety? I suggest not, and the posts here seem to support that theory. If you pack three different fire starting devices are you really planning on using all three or just the one that works in the environment your in at the time?
I think redundancy is the primary reason most of us carry mulitple methods of firemaking. With the added benefit that if there were a power outtage at work say, you could just use your bic to light a candle rather than having to break out the firesteel.

It'd be pretty awkward trying to make sparks on top of the copier.