I like them and pefer the "Swedish" ones that seem to be harder and only need short strokes that seem more controlled and thus accurate for me. The ones from LMF and StrikeForce seem to be the same type.
They need strikers though and it makes them less self contained. They do need practice on technique to be used effectively - at least I know I needed practice to figure out what works. My kit also has lighters and matches and Wetfire tinder.
A plus for them is you can fly with them
