Who really cares?
I have never understood the big problem with someone using more than one cue. As long as the cue does not have red lights, sirens and chrome reflecting into the eyes of the opponent, Why not? I have found in my many travels, that the people who usually complain the most about a problem, can't solve it or do it for themselves. note* I only use one cue, but sometimes I may use a break cue.