Pros
BE, for what its worth, still pretty much lives and breathes the culture of a Big Four Consultancy. It has a pretty big knowledge base that you can tap, there are some great (online) courses, the culture is cooperative and result oriented, and there are still plenty people that one can learn the skills from. If you take your destiny in your own hands and act proactively, you can build a pretty steep learning curve.
Cons
Working at a company in Chapter 11 is not the savest job in the world. Then again, if you want job security, consultancy is probably not the best profession to be in. The company is working hard at cost cutting and improving productivity, and that brings some downside for employees. Many people have left and more good people will be leaving. If you're not supporting a whole family, you might take your chances: where a lot of people leave, the corporate ladder becomes a bit less crowded. Another downside of (any) big consultancy is that the level of bureaucracy is staggering. Prepare for forms in threefold, solution leaders, practice point of contacts, industry account holders buzzing round your head. In spite of this there are still entrepreneurial people around.