@spotter can't see a definitive answer (though I gave up looking after a few minutes Googling. It seems pretty sturdy with the brackets, especially given where it mounts to on the bars, it'd likely just droop down if there was a catastrophic failure of the legs. Assuming they don't go throwing themselves into the spokes.
I don't think you'd have any worries doing anything with it that you'd normally do with the basket. If anything it's more secure I'd say, short stiffer mount etc.
@spotter can't see a definitive answer (though I gave up looking after a few minutes Googling. It seems pretty sturdy with the brackets, especially given where it mounts to on the bars, it'd likely just droop down if there was a catastrophic failure of the legs. Assuming they don't go throwing themselves into the spokes.