My 2 cents - CFAI first and schweser to “fill” the gaps and correct anything I misunderstood from the main text. I do this because I’m a fast reader, but I tend to skim and miss over small details. I think this worked ok for me this time, didn’t find the test too bad, and some of the background material in the CFAI books really help you understand stuff (the MBO/CDO section this year was just awesome). Having said that I completely misunderstood the difference between the old and new pension accounting schemese from the CFAI, and only realized my mistake late when reading schweser. IMHO you need BOTH to get the best out of the exam.