You'll also find that the V8 SC guys have ignition cut on their clutches which, obviously, cuts ignition for the splilt second it takes them to jam the gears, hence they keep their foot flat on the throttle.
They also have a soft limiter which will keep revs pegged at 7500 between gears, such is the beauty of Motec.
I used to flat shift 1st to 1nd in my VN V6 5 speed commodore all the time, but couldn't do 2nd to 3rd. Mind you, it took we about 0.1 do rip it from 1st to 2nd!!
I ran a 15.2 in that car. It rocked!