From my little bit of research, the 'ceramic' coatings are simply an alternate construction / application / reinforcement of PTFE and are currently being used as a buzz word to get around some of the older stigma (and newer with all the 'overheating Teflon causes cancer' media) attached to 'Teflon Coatings' (they burn, they crack, you can't use metal implements, etc)
Teflon is simply the DuPont formulation of PTFE. Basically 100% of the 'non-stick' coatings out there use PTFE (though not all use Teflon because that's the DuPont version). The only truly PTFE free non-stick coating in existence is use on Green-Pan. Well, that and the natural patina that develops on a properly used and conditions Cast Iron piece of cookware.
Anyhow, regardless of what a company 'claims' their non-stick coating is, when pressed they will admit that it utilizes PTFE and I wouldn't dry heat any of those.
Note, pure HA (Hard Anodized Aluminum, or Halulite if you're talking with GSI outdoors) is not the same (though their Triple Extreme Non-Stick is). HA and uncoated Ti have some non-stick properties naturally (as compared to SS or non-HA Aluminum). However, due to melting point concerns I would not advise replicating my experiment with HA.