Reading 48 - Necessary to use CFAI or can use Schwesser?

I’ve been sticking to CFAI 100% and was wondering if reading 48 can be substituted. THere arent even CFAI questions in the book for this reading! Will Schwesser be ok?

Is it really much shorter in Shweser? Reason I ask is that I was thinking of using just Schweser for the whole Corp Finance/PM reading, but then I saw that it is about the same amount of pages as CFAI texts, so what is the point?

I just read it in the CFAI texts…snooze central. not even a single practice problem in the book. I doubt there will be a question on the exam from this reading.