Well, if the poster in this FT thread is truthful, it seems that the EZDNAs are in fact using genuine Evolv DNAs (post #6 is quoting an email from Brandon):
well i'll be damned... a china tube mod with genuine evolv dna30: FastTech Forums
Interesting link you got there.... One sbody's web site shows the Vapor Shark as dna and says it goes to an exclusive sales agent in the US. DNA E Cigarette Battery. I briefly looked at all the devices they listed on this site and saw no EZDNA designation nor a device looking like either one....
Next google : Product - E cig mod - ecigs,electronic cigarettes,electronic cigs,electronic cigarette,wholesale ecigs,ecigs suppliers,ecigs manufacturer,electronic cigarettes manufacturer Sbody web site also.... shows both devices with descriptions saying original DNA PCB..
So it may very well be that both these are brother/sister DNA devices.. IMO