I think Dr. G has done a very good job of explaining the coating's permanence. However, from the very first threads comparing Aquartz, Cquarts, Opti Guard, and Opti Coat 2.0 I have done my best to make the distiction that our products (Opti Guard, Opti Coat) are coatings like paint is a coating while Aquartz, Cquartz are extended life nano-sealants. The two fit a very different niche and should not really be compared as if they were the same tech.
The bond that forms when our coatings are applied is permanent. The coating actually becomes the topcoat just as if you took your vehicle to the body shop and had another layer of clear added. The only thing that will prevent our coatings from creating a "permanent" bond is an improperly prepped surface...just like paint.
Nano sealants, on the other hand, form a very different and weaker bond. The nano size allows the bond to be better than that of a traditional sealant or wax due to the multiplication of bonding points from the small size of the particles, but it still only sits atop the surface and does NOT become the topcoat. You will see the results of this over time as the bond weakens, the attributes of the sealant fade, and eventually you have to reapply...even with no polishing/abrading. Granted, this can be 2 years or so, but our coating never "wears away" from normal upkeep/cleaning (only abrading...like paint). To sum up, the bond formed by nano sealants is not "permanent" as it will weaken and break over time without being abraded.
As I've tried to convey in every thread that alluded to comparisons, there really is NO reason for a Opti Coat vs. Cquartz or Cquartz Finest vs. Opti Guard thread. They are both different products that do what the label claims and they both fill different needs.
One note on thickness: even if the coating and the nano sealant both show a measurable thickness, that is not the question that will prove permanence. The bond is the key here. Both the pre-polymer resin we use and the nano particles in nano sealants are almost as hard as diamonds when dried and hardened, but the product can only protect your paint when it is bonded to it. If that bond is lost, so is the protection. Opti Coat's bond will NOT weaken over time...it's permanent.