COBIT depth for people that have official ISACA book

Sirkassad

Obviously not looking for test questions, but I've been reading about COBIT in the CISM AIO and am wondering if the official ISACA book, or the CISM exam, cover COBIT 5 for Information Security , or is it enough just to be knowledgeable about the basic COBIT control framework, which is just about IT governance.  More information about Cobit 5 for IS can be found on the isaca web site.  I'm asking because I have the AIO book but not the ISACA CISM book and I'm trying to get an idea of how much value is added if I were to go and plunk down a bunch of money for the ISACA book.  I didn't even know there was such a thing as COBIT 5 for IS until I cam across it just now.