Fast & precise, I'm sure they qualified my technical skills as well as my communication skills - Being from a different country that is a big plus when it comes to the clients.
It wasn't as deep technically as I was prepared for - but be ready because the interviews with the clients are harder and you have to be ready (knowledge wise)...
When it comes to communication skills, they have a team of non-technical people that helps you get better at interviews (I was very nervous at first, but you get better the more you practice)