I don't know that there's an advantage w/doing the conversion for every day riders or MXers, but for dead engine starts this kit would be wonderful! Back in the day of riding my KFX400 I was pulling hole-shots on 450's in GNCC's b/c you could pin the throttle before you even had it fired.
Stupid FI delay.
Why do you think Yokley isn't riding Kawi anymore!? He could never get the starts he needed so he never got the results he wanted.