My Great Planes Fling DLG is pretty tough. It's taken a stall from 10 ft. The bals is reinforced by CF in the spar so it's pretty tough stuff. The tail feather seems to be slightly tough, but more lucky. But as they have said in the podcast before. It's hard to crash and ruin a tail. It's not like a Porsche 911 and its going to go tail first in a crash.
If you don't like cars skip that last sentence.
I also took a shot at building my own out of some foam, posterboard (wing skins), and some carbon fiber (fuselage rod and wing spar)
It did ok. I built way heavy, and it would only get 20 feet in the air, but it was fun for about 3 days before I broke it in half.