learn to use

It is a tool that is not as easy to use a lighter. For the first time it will take a little time to adapt.
After that you can use it very well and it is a great tool but you will also understand the limits.
You should know that it does not turn anything (or almost), lighter, it takes a very good fuel. It works well on gas, dry grass (hay), cotton, magnesium, volatile gasoline-type products. So if you want to light a fire anywhere and anytime (any time), you will need to prepare before with firelighters. So it still takes up space.
Lighted fire interesting that I could have found:
-The Cotton balls (you can do to make from cotton cleansing, pharmacy, buffers), it is airy cotton. You can apply oil or alcohol to it burn longer, but it gets dirty to carry.
-The rope cotton, it has multiple use if one provides a metal tube the diameter of the rope to manage the fire and extinguish it by smothering. Again it can be coated to increase the flame but it gets dirty my thing is to put a small soft plastic sleeve wider than the rope (thermoformable sheath) for not having to put your fingers on it.
-the most elegant solution but requires a little work before each fire a magnesium lighter and some paper. Just make chips with magnesium and put some paper so that the fire lasts longer and put less magnesium. The best is to have small piece of paper to mix with magnesium.