"Noremove" is not the same as "nodisarm". Nodisarm weapons are very, very rare. Basically there's no way to get them out of your hand short of you dying, or you removing them. Strength loss, strip, grapple, fumble, sleeping disarm, grease, etc. None of those make you drop a nodisarm weapon. But you can remove them normally. That's why they're so sought-after.