There are lots of other things that would come down if you grabbed them while falling.
A ceiling grid cross tee for instance. How about a piece of aluminum flex?
I don't use this stuff for supporting conduit, but it looks, like trollog says, stronger than a Caddy clip.
And like iwire brought up Unistrut, metal framing, or a wood 2X4 doesn't carry a UL listing, although all are acceptable supports.
