The placement of the bypass switch on an overhead panel within inches of the fire ext selector switch (which is similar in marking and size) is also brilliant cockpit ergonomics.
Switches with a light bulb hooked up to the warning logic would easily have solved that confusion.
I believe that the S92 was designed solely to meet the requirements of FAA/EASA Part 29. I donīt think much attention was put into making it "user friendly" in terms of cockpit ergonomics.