Ok, I tried it.
But for SOS p. e. if you need a helicopter or mountain rescue they need the coordinates as plain text.
If you "share" your position as SMS you get this with something like ..ttp:/mapof.it/h/u1m286...gz. So if you want to see it, you must have an internet connection plus Locus or Google Maps and only afterwards you can see the position. In my eyes it´s a bit clumsy.