It would actually be harder to practice in the US with a joint honours LLB depending on how many law modules you do. The New York Bar only takea straight law. So if you end up in a US firm you may not be able to qualify there too. The California Bar most likely would accept it, as I know someone witg a 4 yr joint hons in law and politics who did that instead. Otherwise Exeter is well regarded enough for law firms. I will be back with a link from Chambers.