Ripley is a very traditional English name. I know of a QC (Queen's Council) with that name so I don't think it would stop him from being a barrister. In fact, old english names are well suited for people who practise law.
While there is a trend in the States to give girls traditional english boy names i.e Aubrey, Avery, Rory, Riley, Finley etc I don't think this is necessarily true for a lot of the Commonwealth nations. Or at the very least, they are recognised as being traditionally masculine names.
My son is named Ripley and the main comments we've recieve from people are 'that's traditional', 'that's very English', 'that's different' and 'like the main character in Alien?'
No one has ever mentioned Ripley's Believe it or Not despite there being one nearby.
Everyone seems to adjust to his name quite quickly. My friend's daughter Nikita gets more repeat comments (usually about how it is a russian boys name) about her name than my son does.
When he isn't being called Ripley we call him Rip.
Also, it might help to know that the main character in the Alien series is called Ellen Ripley - Ripley is her surname.