I think it depends on the shoe. Im a one spacer left foot, zero right foot. If i get that backwards when installing one foot floats way too much, the other wont clip in. I didnt have to fuss much. My only gripe was where i liked the cleat on the shoe, the toe bent up exposing the nub on the cleat to the pavement so it wore really fast. Otherwise combo works fine as you can see.
using the exact setup and it works great...sucks with no spacer and not clearing out some space around the cleat on the sole. So, use the spacers and clean out a circle in the sole around the cleat....makes it way easier to get into.