Heres a freshly picked Bhut x JalapeƱo for reference. Not trying to say you're wrong or start an arguement. I prefer to go by pod appearence rather than leaves. Just me though
The only slight way I can tell is that the Reapers usually tend to be slightly larger than the primos with more of a fish hook stinger but not always. Other than that I can't tell.
This really is a "Beating a dead horse" topic. I do see where you are coming from however and your curiousity to...
Caramel would be cool! You should consider growing the caramel bih jolokia. I think you will find it to be pretty much what you were hoping for with the NOT caramel mazballz you grew.