I applied via the easy Linked In feature with just my resume and was promptly contacted by a recruiter. I had a general screening call with the recruiter which consisted of questions like--tell me about yourself; why are you looking for new opportunities; what are your salary expectations, etc.
The second step is a phone case study which takes about an hour. The interviewer reads the case study and asks a few questions to gauge your thought process. Very standard--missing information, no right or wrong answers.
After passing that round, I was brought in for an in-person interview which the recruiter prepared me for-- 1 hour behavioral, 1 hour to work out a case study, and 1 hour of debriefing the case study, answering questions, and some general behavioral and business/market questions. The behavioral interview was standard questions you can find on any website and is with 1 staff member. The hour of case study is done on your own. You are given a standard case study with lots of unnecessary info, missing info, and questions and are asked to white board a powerpoint presentation which you will then present to the next interviewer. If you have been in enough consulting projects, the case study resembles any client engagement methodology. The next interviewer comes in when the hour is up and asks you to present, asks some clarifying questions, then you just chat. Sometimes, a second interviewer comes in for either the behavioral or case study portion; this is an interviewer in training.
My recruiter was awesome and always available. After a couple of months of follow-ups, it looked like they found a position for me and I received an offer. All in all, I'd say this is more structured than other interviews, but not necessarily harder.