Yes when using a delay box your staging wouldnt change, and after a few hits to get the box set you would be ready to the make the change at anytime and be close. Using the lock out feature of the box would be a must with type of valvebody. For sure it is easier on the high clutch pack to leave in high rather than quick shift, however we were just getting data with a customer to see how his car reacted and what his difference in staging would be as he is a bottom bulb racer. Once a racer has data it becomes a great tool. I have seen guys switch set ups between rounds just to make the guy wonder whats up, or the race has run late and the dew comes in. With as much as we spend $200 is small change.
So collect lots of data so when the time comes to use the option you will be ready.