The lubbers I got never even opened their mouths at me or spit juice when I pick them up. Differential grasshoppers are more prone to biting, as are many of the genus Melanoplus... but the worst is a slight pinch, nothing that leaves a mark. Carolina grasshoppers and other banded wings and slant-faced grasshoppers never really open their mouths when picked up... although some still spit juice, never been bit by one. For some grasshoppers, I used to use the biting and spitting reflex to hand feed them when I was a child. It would keep the grasshopper calm as I held it. I don't do this anymore, don't need to. If a grasshopper is hungry, it'll eat without coaxing. Sometimes a grasshopper will be so hungry that it will try to bite at whatever it can reach, which often is my finger. With Eastern lubbers, and probably any sort of non-flying Lubber grasshopper, they won't jump very often and are very tame and docile. I let them sit on my keyboard and eat fresh greens.
Conehead katydids have the worst bite I've ever come across in an orthoptera, but I'd imagine some katydids from Texas and the Jerusalem cricket might just have a worse bite. All katydids tend to nibble my fingers for some reason, either salt or moisture, coneheads aren't any different, except their jaws are huge and they pinch! Other katydids are fun when they do this, it tickles and feels cool, since it's similar to a mantis grooming sensation than a biting one. Although, sometimes a katydid will start to bite just because they are hungry or something.
