Yes, I live in FL and I tried out some discoid roaches. My beardie loved them. And I prefer them over dealing with crickets too. However they are a little more expensive and especially hard to find this time of year. I asked a around at a few places and they told me they just don't breed as well as dubias. It seems like everywhere I look is out of stock now, or charging 50 dollars for a 100. :-(
But they make a great feeder and when I can get some more I'm going to start a colony to save on money. I would recommend them if you can find them.
And yes Dubias are not native to Fl but we have the climate for them to thrive, and being they are an invasive species, its a no no here. It really is a bummer.