I think he was just making a point... putting them together is silly, and either the lizards or the scorpion would just end up dead.
Hybridb7, this is 2 threads where you ask if this can live with that, or if this can live with that. Let me give you the soundest advice you'll ever hear about keeping exotic pets: If you can't afford another environment, you can't afford to have that pet. Do your water dragons and your frog live together? Their requirements may be similar, but that doesn't mean they should be housed together. They can transfer diseases back and forth, stress one another out, compete for food, etc. It's NOT a good idea. But housing a scorpion with a lizard is just crazy.
- Ken LePage