Though the name means "precious," I would lay money (lots of money) on most average people in English speaking countries (particularly the US, at least) mistaking this for a misspelling/kre8tyve spelling/variant of Dragon/Drago/Draco. That brings a whole different picture into focus than "precious" does.
One way to test my theory comes to mind. I have not seen "Layer Cake," but my understanding is that it's about violent drug dealers in
London, no? Was the character
Dragan Slavic? Did he act "precious," or like a dragon (seriously, I really don't know)? If some screenwriter chose
Dragan for a violent non-Slavic character then I think my point is made. If not, then I'm wrong, and that's okay too.
(And
Daniel Craig is *NOT*
James Bond!) ;)