I don't even see how it will show you that option-shift-2 is the Euro symbol. You'd have to already be holding down option-shift for it to show up, wouldn't you

I don't even see how it will show you that option-shift-2 is the Euro symbol. You'd have to already be holding down option-shift for it to show up, wouldn't you? So you'd have to already know most of the shortcut. This product seems like a solution in search of a problem.