I have them on a 13 lb 43cc 27% Ultimate. I've used them a lot and trust them, but I'm also very careful to form a precise slot, remove the covering for 1/16" either side of the slot, drill a "sap" hole in the center of the slot and properly soak six drops of thin CA on each side. I have NEVER had a CA hinge fail in flight. Have had the ripped out in crashes but usually it's the surrounding balsa.

I note in my fleet that I use them in ARFs but not so much kit built (preferring pinned Nylon hinges). Hmmmm.