Absolutely love this tool (and Seil, and BetterTouchTool). I shift-reversed the number keys (i.e. shift-6 prints a 6, the 6 by itself prints ^), made my left and right shift's open and close parentheses (I tried to make alt+left-shift a square bracket, but couldn't get that working very well), made caps lock escape or control and shift-reversed the backslash/pipe key.

I have trouble using other people's keyboards now but I'm very productive on my own!