Cutler-Hammer does make 1-pole and 2-pole (common trip), 15-amp and 20-amp, AFCI/GFCI combination breakers for both CH and BR series panels. So in theory you could put total protection everywhere, including shared-neutral circuits. Their classified breakers for QO and HOM series do not include all these options.
This is one of the reasons I may end up using C-H in the home I'll be building in a few years (although, things can change by then).
