I have flown many different full scale a/c and especially with the tail draggers I agree the rudder is paramount to success. It is just LESS important in our models under some conditions. I also agree the agree the rudder can be added as the other controls get mastered. Again, go fly it will all come to you as you progress through the hobby, it is a constant and permanent learning experience.
Bruce
I was not fortunate enough to fly back in the days of escapements. It must have been a true adventure with every flight