I am not sure that I agree with that. While that would be an option, could you also not work on stratifying your switch seed "artificially" and then drill it later? In other words...
Burn the chaff off now.
Prepare your switch seed by stratifying it yourself. (Expose it to multiple freeze-thaw cycles while still in the bag, at home, over the next few weeks.)
Let the field green up and hit it one last time with cleth and gly. It should then be dead, dead.
Drill the stratified seed...perhaps even on the same day that you spray it one final time.
I hope that is a working strategy...as that is what I am planning on myself