As a collector of mainly African Baboon spiders I think that they are underestimated.
People think they are too aggressive, sometimes too poisonous and mainly never visible.
Especially the burrowing spiders are underground most of the time and only come out at night and only if they're hungry. Just like Ceratogyrus darlingii . Together with the genus Sphaerobothria of South America, the genus Ceratogyrus attracts the attention by having a horn growing out of its foveal groove. What the purpose of this horn is, is still in research but probably for the storage of food. The expandable intestine is situated just below this horn and probably can expand in the blood filled horn for storage of food.