They come in handy in a pinch, but I wouldn't use them as a staple. They would be easy vacation food though.
Once Dudley is eating normally again, I'll probably buy one of the big containers of it so I can add a little of it too his regular salad once in a while, for variety.
If you get some though, get the kind for Iguanas. It's the same as the Beardie kind, but with out those nasty freeze dried bugs.