Mart's Monster Mod and Better Cities both provide options for archers patrolling the city walls. Are these options compatible? And if not, which is preferable?

Try it and find out?

I guess it depends on if MMM does anything other than just add archers to walls. If thats all, sure, though it might end up rather crowded up there.

Yes, I could test it myself, and I will if I don't get an answer by the time I'm ready to get into it (I'm currently in the process of reinstalling absolutely all my mods, so it'll be a while). However, I can't be the first person to use MMM and BC together, so surely someone out there has already tested it.