The soil is a vermicompost heap with various inputs in various stages of decomposition, mostly anaerobic (I think). It's basically a heap of dirt, leaves, grass, biochar, and non-animal kitchen waste that I stirred before taking what I need! It is chock full of many different bugs. It hasn't ever steamed or gotten temperature-hot, that I know of. The totes for my wicking beds are not heating up, and I guess I don't expect them to. I did add vermiculite and perlite, so between those and the big organic chunks from the vermicompost, I think it should be okay for aeration.
No worm bin! At least not yet. I keep toying with the idea! When I need to replenish my EWC supply, I dig a hole in a flower or garden bed and retrieve loam that's honeycombed with worm tunnels. I only use EWC for IPM, so any N-P-K it adds is incidental.