Well getting away from the poison sacks, I'd think they are eatable. Crows flip them on their backs and eat them.
So it's like an Australian 4 legged blow-fish! I figure if it was easily edible and most importantly... tasty, there would have been some sort of culinary niche. From what I gather, these fogs have been around for over 50 years. I could be wrong though, I haven't researched.
It sure is! Yeah,you'd think...I guess people just can't be bothered to work around the dangerous bits.