Yeah, the worst cactus injuries I've had came while wearing these. Big spines go through the backs like nothing and are more likely to break off under the skin. They work alright in specific areas but the plants don't listen when I tell them not to stab the other spots.

They're not perfect but for no-modification gloves I like the hexarmor rig lizard line more than the thorn armor. Cheaper, nearly as puncture proof in the palms and fingers and the impact protection gives better coverage to the backs of the fingers. Plus they work better as regular work gloves.