Pros: These books do give you a good insight to what is offered in Server 2008 RS and some instructions how to configure certain aspects.
Cons: As others have stated, these books will NOT prepare you for the exams...this is a general rule for the MCITP exams. I started with the Windows 7 exams and after the first exam I learned that the books give you about 50% of the information you actually need to pass. I took the Windows 7 exam and even after reading the book twice, doing all the practice exams and scoring high 90's I failed the actual exam. You need to augment the books with classroom study, bootcamps, other books, etc.
The one pet peeve I have with the book is the practice exercises. First, even though the book will preface with an overview of a lab you will need to perform the exercises, it is never complete with what you actually need. Since setting up the labs in a virtual environment takes so much time (compared to the labs themselves), why can't they just give an inclusive run down of what is needed rather than a an incomplete list? I hate to be in the middle of doing the labs and realize I need another virtual machine configured to do a 5 minute lab.
Second, the labs are just too basic. Some of the lessons take < 5 minutes after spending two hours reading material. Even worse, the exercises rarely coincide with what is tested on the exam.
Overall, I wish Microsoft would stop marketing this as exam prep. It's a good reference book, but just not for exam prep.