Coman actually makes it easier to remember service order and score, IMHO. You start serving your two points from the same side. Odd points start from the ad side, which is each server's first of two points. Switch on the first point and every four points thereafter. Easy.
I also like how the extra changeovers give me and my partner a few extra seconds to move to the other side and *think.*
Even though our matches are indoors, I prefer that we stick to Coman.
-- Random Error Generator, Version 4.0
-- Master Moonballer