Twanger said:
We have that mongo Wishart carabiner too.
It's great for a quick clip.
Working load is over 3,000 lb, which is a lot.
HOWEVER, DO NOT TRUST IT ALL NIGHT.
After 20 years of rock-climbing I can tell you unequivocally that carabiners that do not have gate-locks can unhook themselves from the line/rope/loop.
You can make a gate lock with a 4-5" piece of 1/2" surgical tubing. just slide it over the gate.
Also, as mentioned we don't use the wichard as the sole attachment unless its a quick day stop. At night we alway have two lines.