>>5233105i think it depends on the figure, people have said that their gripping hands are too loose, yet mine are still tight so he can keep that positition at least half a minute (i haven't tried for a longer time yet)
i would recomend you to not store those hands in the thing that figmas usually come, so the peghole doesn't get too big and loose, with that the only thing you should take care is the joint not slipping from the arm