We have lots of them growing in our area.
From my understanding, they do not last long when riped and must be used quickly. The pod is filled with lots of seeds which resemble large kidney beans. Our kids picked a bunch and disbursed lots of seeds on our property. As far as tasting them, do not think that I have.
Like anything else that grows in the the wild, yes you can probably eat it but it has no commercial value. That tells me that one of two things account for that - one, short shelf life (like a white fleshed peach) and two, you need to develop a taste for it.
Terry