it's "soft" in as much as as you approach the limit the car develops a miss instead of cutting completely out, so it's gentler. Down side... It's not as abrupt as you might like for teaching.

i want a widget that watches the tach and if you put the car in the wrong gear it activates a solenoid that operates the clutch and then the rev limiter brings it down. rather easy for us with hydraulic clutches. While I'm at it, hill holder unit too ;)