I have a question regarding gas canister stoves in general. Can they be safely lit with a Spark-Lite?
Define "safely"....
Safely as in "works every time"? Absolutely.
Safely as in "you won't burn yourself (badly)"? Probably, at least not really bad burns. As long as you're quick and nimble, that is. But you'd probably loose some of those ultra-fine hairs on you fingers and hands. Burnt hair smells really bad, but as long as the skin isn't burned it doesn't really qualify, does it?
With practice I'm pretty sure you will learn how to apply the spark-lite so that your fingers really aren't where the flames will be a fraction of a second later
I use a plain old-fashioned fire steel to lit propane/butane stoves. It will throw the spark into the burner head so my hands don't need to go there. A distance of two inches is plenty in this context. It probably isn't as reliable as a spark-a-lite, but is good enough for me.
DISCLAIMER: I use a propane burner (trangia) that fits the classical trangia spirit burner wind shield. That windshield is a very enclosed environment to put my fingers to lit the gas that's flowing out. I'm reluctant to light it with a lighter (I have done so, and will do so if I have to - at the cost of a few microscopic hairs and really bad smell). Tossing a spark in there so my fingers can stay out of the wind screen makes much more sense. Without a windshield things are a bit different because the gas disperses so quickly.
Most canister stoves are designed much more open than my trangia, and without much windscreen to speak of. Which means that the gas will disperse more quickly so that
a) the spark must be placed much more accurately than I have to with my trangia setup
b) the open design means you can place your fingers UNDER where the flame will be.