I've always owned well rounded horses who could transition easily from western to english pleasure and win at both types of classes.
However, I have never personally taught a young horse to do both.
It seems like it would be easier and more comfortable for them to learn english, as a horse always learns to turn the "english way" before they learn to neck reign. My guys seems much more at ease when I post and allow him to trot out than when I try to get him to do the slow western jog. I guess my question is (obviously a horse can learn both disciplines) is it easier to begin a horse with one discipline and then teach them the other after they fully understand the first, or can a young horse learn to simply adjust riding styles based on what saddle you put on without too much confusion. Is it easier to teach an english horse to ride western or to teach a western horse to ride english?
Just some food for thought...