Anyone use this cord ?

Saw this on a recent youtube video and was curious if anyone uses for guide line ridgeline etc allot cheaper than zing it and Lash it


http://www.countycomm.com/teather.html

It's nylon, so it'll stretch. Not good for a ridgeline, ymmv.
But looks like a good utility line. With it having an inner core, it won't splice like zing it or fling it.
Not to long ago, everyone was using paracord, but then we were all readjusting the tension on the tarp as the paracord stretched...especially in the rain. Not fun to have to retie everything in the rain.

Thanks Gargoyle was wondering about stretch no mention on web site