Just because they eat the bacteria doesn't mean they are bad.
Cows eat grass, which we can not, yet we eat the cow.
They are able to utilize the proteins in the bacteria etc. and they break it all down. Worms are very nutritious and fed to many animals. I used to grow my own worms to use in home made fish food for very expensive Discus and cichlids without and problems, in fact, all benefits.
I even tried to feed them to my Dragons but they just didn't like them. I wonder if you raised hatchlings on them, if they may like them from the start. I know most dragons get in their little grove and don't like change for the most part.
I'm going to give it a try. I have some hatching as we speak (dragons that is). I'm going to see if I can get them started on worms and compare the growth rate compared to ones feed pellets, ones feed pellets and mealworms. The ones I feed the worms to will also be fed the pellets. And all will of course be fed the veggies.
I have stopped feeding crickets because of the parasite load they carry so I can't compare to them.
I'll keep everyone updated on how it goes. I'm guessing that they won't want them from the start though, but I'll still try.
Joel R