After a ridiculous number of clears he finally spawned for me at 234,586,1166 at the beginning of a bridge behind the hut with 3 apes.
Since this spot is mentioned nowhere, not even on Magelo, I do think it's likely that any ape can be a PHer but I'm not about to prove it by continuing with this endless camp.
This was a painful camp which I just about gave up on, TBH. I had a gut feeling this Sunday morning, logged in and cleared every ape except for the 3 in the hut who actually killed me due to not paying attention. By the time I rezzed, ported to my GH to rebuff and returned, this shy guy had spawned. He blinds and forces you to feign death so you can't cast even thru the blind till you stand up.
About time! Now for Seedspitter and then done with this zone!