Traditionally barristers don't shake hands with each other apparently, or so I read in a law magasine. It said to be cautious of work placements of it as you could be sneered at for not knowing the custom! I spoke to the young barrister who I'm shadowing in August though and he said it's not ALL barristers but it can happen!
scary!
It's a very different but very similar scenario in some ways, so I thought I'd just add that.