Jeeesus!
If the QRH says so, fekkin do it!
What on earth is so hard to understand about that?
I know we descend at idle with no ignitors on every day, but are some of you some kind of self-appointed galactic test pilot who knows more about this than the manufacturer's test pilots do? Which TP school do you come from - do tell...
If such superior Test Pilot please speak up.
If not, kindly shut up and let the rest of us Professional pilots follow the checklist. Gobshyte fools.