I worked at Kurt Salmon full-time (More than 3 years)
Some amazing projects (sometimes needed to network / leverage relationships to get staffed on the right opportunities). Really great people and culture. Engagement managers / clients generally respected work-life balance (although some projects were worse than others). My colleagues at KS were (are) some of my closest friends.
Potential to travel every week (not always a Con, but it's the reality). Unless you live in New York.
Your career path is in many ways shaped by the projects that are being sold (need to be very clear about your career goals to make sure you can get the experiences you need to grow).
While I was there, some projects were poorly scoped / resourced. Some projects were overstaffed and people were underutilized -- this was frustrating. On many projects there was the opposite problem. Probably par for the course for any consulting firm.
I applied through college or university. I interviewed at Kurt Salmon.
Had a first round interview on campus with Kurt Salmon. They're currently going through their acquisition with Accenture, so the interview was strange and focused mostly on Accenture. It was typical behavioral questions, but it was unclear whether the interviewer was searching fit for KS or Accenture.