If it is not an LOS are you guys still reading it? Like the CFAI text has a few topics that are not in the LOS. For example Bilateral Arbitrage in Economics.
Are you asking if we’re reading other things besides the CFA curriculum? I might read something outside of the curriculum if I find it interesting and feel I have the time to read it, but I wouldn’t count that reading experience as part of my preparation for the exam. For the exam I would concentrate on the LOS’s only.