Yeah but no reason to do it in a blinding rush either.
Besides there are 4 masks per 3 seats.
Interesting point about the gear. It just seems for standardisation and emergency purposes better to leave the gear alone.
Can't go wrong as it has been demonstrated. And the gain is not much. Since you'll lose time in the beginning part of the descent, and gain in the latter part.
Easier for us I'd say to just pull the s/b, retard and go as the banana