This thread is like a textbook case for change aversion. Let me grab my crystal ball and predict after a full playthrough the overwhelming majority of the "no combat xp" complainers will completely forget their grievance.
Also Lephys, I should point you answered emotional arguments with long analytical ones, hence some of the negative reaction you got from the "opposite" camp. Your argumented posts were interesting enough, but opposing rationality to gut reaction is quite unlikely to get positive feedback. Unfortunately there is a rarely room for informed debate in your typical forum exchange.
Myself have no worry about that experience system, I'm confident it will change very little while it has provided a significant gain of time in development.