That's a pretty weak argument, though. I use a vertical mouse because it helps my RSI tremendously. I don't think there's anyone else in my office with one. I'm

That's a pretty weak argument, though. I use a vertical mouse because it helps my RSI tremendously. I don't think there's anyone else in my office with one. I'm in a tiny minority there. And yet, I like my vertical mouse and I'd rather use it than a normal one, no matter how many others prefer the horizontal kind.