This is a nice program for avoiding the control-click button but I ran into two things:
1) Something about the way I use a trackpad -- I found that it was inadvertently right clicking a lot (because I had my finger over the mouse button, I guess).
2) It takes a second to right click. In Civ 4 (honestly, my main reason for windows) you right click about as much as left click -- that second started to get annoying.
For most people it is probably better than the other program, but anyway, I thought I would report my findings. Thanks!
-- David